The instant I saw this picture, I thought of the Parks and Rec scene:
"That's not really the attitude I expect from an award winner."
"Everything I do is the attitude of an award winner, because I have won an award."

That should be the case for the picture "Everything I do is manly because I am a man." And the same for the person you are responding to "Everything I do is gay/straight/other because I am gay/straight/other." That one part of someone's identity has no bearing on defining the rest of them - ie, being gay means that he's attracted to men but doesn't define what he wears, how he acts, etc.

"but what about--?"
"There can be no question!!"

Supported the poaching, or were victims to it and still trying to make a dollar where they can? #victimblaming

I will never not upvote this. I can't even remember the actual words to the last line anymore, it's been "I am several fish and not a guy" to me for a decade, and I don't mind not looking it up to remember what the real words are. I prefer this version.

Who's putting their real picture as a profile picture on an anonymous, public forum? Facebook is over there somewhere.

A man who blatantly skirted safety regulations and not only fired, but sued, employees/contractors that called him out on safety concerns. He complained that these safety concerns were stifling innovation and bragged that NASA and other agencies were consulting on the design (hint, they didn't, they only recommended what material to use for the hull, and that was the extent of it).

All of this was to try to get billionaires' money for adventure tourism under the guise of it being a research team and calling them "crew". Others on previous dives said that he likened the risk to the innovation of the industry as a whole and that if the Wright Brothers had fallen during their flight, at least the industry would have known flying was possible and would have continued on and learned from it. He neglected to point out that the industry already has many, many successful submersibles, so much so that there are industry standards for safety! Additionally, this man didn't contribute any research to the scientific community based on these dives. Truly just a grifter trying to exploit the titanic for tourism.

r/piracy is currently voting whether to return to normal or allow only pictures of John Oliver as a pirate

I am not denying that there are people that have detransitioned for various reasons (though it is no where near the percentage the ridiculous, far-right 'reports' claim it to be), and I do not deny that there people who have had surgeries that have not gone as planned ("botched", or unpleasant, or left them not feeling whole as they expected, or many more reasons). I'm also not denying that people that went on therapies ending up not becoming the person they expected and still not feeling whole.

What I AM denying is that there exist "harmful communities" that are needlessly "encouraging" transitions to those that don't need it. Instead, what I believe is happening - and it is very important that I am saying believe, because there is a very wide range of things happening in these instances - is that those seeking out these treatments are looking for a "solution" instead of realizing that they are going to have to go through a journey to discover who they are. They are in pain, anguish, confused, and are looking for something to make them whole. In any solutions involving the mind, such as depression, anxiety, OCD, etc, it takes multiple tries or combinations of treatments to what works, and there's no reason to think gender identity and expression would be any different. As you can see in the comments to the thread you linked, multiple commenters suggested not getting hung up on labels and to explore multiple options. I believe those that you are referencing got hung up on the first "solution" deciding that must be it and then (even subconsciously) deciding the community was the one that "encouraged" them into it when it ended up not being what felt right.

Again, literally NO ONE in that thread encouraged transition. The only thing being encouraged was that OP had to explore to figure it out themselves and that no one could tell them if they were trans except themselves.

I've spoken with many people who got on hormone therapy because they were "encouraged" by communities like this.

No, you haven't. Because that doesn't exist except in people's made up anger-fantasies in their heads when they try to come up with more reasons to get upset at trans-allies for.

Anorexia is actively harming the individual, exploring gender identity and expression is not. Additionally, the commenters (multiple!) told OP that they should seek out therapy in order to actively explore these ideas.

I was very interested to see examples, as I do not like to judge without knowledge, and I am a very firm believer that toxic positivity is harmful.

That being said, I saw no toxic positivity in that thread or harmfully "positive" comments. Instead, what I saw were many people encouraging OP to explore the ideas thoughtfully while keeping in mind that no one can tell them if they are trans except themselves. I saw encouragement to seek out therapy instead of doing this alone, encouragement to consider the ideas of doing mundane things as a woman (such as doing taxes, grocery shopping, commuting, etc) and see if it still felt right (instead of just the attraction or sexual aspects), reminders that the whole concept is a spectrum and not to get hung up on labels and instead focus on actions that feel right.

I fail to see how any of that is toxic positivity.

The only worrying comment I saw was yours, and even moreso because you indicated that you were biting your tongue because of the community's rules. You used negative slang terminology to indicate this person merely has a fetish and that this big bad world is too confusing so OP should look to the past when these things were handled more simply "scientifically", and insinuated they were only going to blindly follow the answer given to them about whether or not they are trans instead of explore their identity given the info from the thread.

Quite a few subs had polls today for how to run, one of them was r/showerthoughts voting on which days to be open and had a comment for each day for the next week for open and each day for the next week for closed and it was unanimous of (exactly equal numbers) all upvoted days closed and all downvoted days open.