Yes.

The tag is Not Safe For Work. I'd say that if you were to look at this in most work places you'd probably be speaking to HR within the hour...

Yes. Problem is that NSFW has lost its original meaning to a lot of people. NSFW was originally to hide things that might be controversial to be visible on your screen in a workplace, so it should be fairly conservative. Beachwear would 100% not be safe to look at in a work environment.

But now a lot of places are using it to determine what is safe to look at not in front of your boss, but in front of your kids or in public. That is a much different thing. NSFW flags should not be used to restrict kids from seeing it, just your boss. There needs to be a separate flag for hiding things from kids. And because social norms are different in different societies, there should be even more granularity in the flags. Nudity is just one thing that is NSFW.

NSFW should be reserved for blocking things that I don't want to suddenly appear on my screen when I'm browsing the Internet on my break at work when I'm allowed to browse the Internet, but it wouldn't be good for a naked picture to show up on my screen suddenly.

Yes. All academic points aside, it's not socially-acceptable to view stuff like this in public.

No

Having looked at your referenced image. No. She is appropriately clothed for summer.

In certain states in the US, a woman can choose to be topless anywhere a man can be. This woman is not topless.

Also maybe not visit Lemmy or any social media at work.

As far as on the bus? I guarantee that there's a woman on the bus in similar atire off it's summer.

Probably yes. As long as it's something that would reasonably not be ok to watch in public/family/work environment, it's always better to be on the cautious side.

There's a setting to just not blur NSFW tagged content, for people that are not concerned.

I would personally adhere to US Beachwear rules unless mods specify otherwise.

1. No nipples, exceptions being for explicitly male, of photographs of cultures that generally do not cover breasts, or certain artistic or medical references.

2. No pubic region that reveals any genitalia or anus.

3. There is no third rule, literally anything goes, including the image you were wondering about.

So while some people might object to a lot of the content we see, I don't personally think it is problematic. Especially when your instance has images collapsed by default, except for thumbnails.

If you want to start your path down the reddit rabbit hole, yeah. Else, no

There is no social media that would consider summer clothes NSFW, you are taking it too seriously, it just means "not porn".