Some ethnicities have less or different body odor. So some people just don't need much or any deodorant.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4724538/

So, I'm kindof an outlier, I guess...

I bathe regularly and I have always used Safeguard antibacterial soap. I work physically....construction, handyman, remodeling, woodworking, etc. I live in a tropical climate. In spite of all that, I rarely sweat (most likely due to climate because I sweated like a pig when I lived in SE US). When chatting with clients, I'd make an apologetic comment about my smell and they always respond with "you don't smell."

I assumed that this was just being nice and cordial, but my wife says "no, they're right. You don't smell". I assure you that she is NOT trying to be cordial, and it turned into a conversation in which she insisted that I don't smell. "I can tell you've been working, but you don't smell bad or anything..."

So I would occasionally "forget" to wear deodorant. Eventually I stopped wearing it altogether. Same thing: not smelly. I HAVE to assume that it is because the soap killed all the smelly bacteria.

Personally; I manage my BO. If I can lift my shirt up, pull my head inside the shirt, and smell my own armpit odor, then I'm in need of some DO.

I've been using a Dove branded Spray-On (AP/)DO for Women and it's effective. By combining the acts of applying DO, then, changing clothes; I don't particularly sweat over much.

I Do Shower on an As-Needed Basis. That's saying that I do shower, without committing to any specific showering pattern or timing basis. If you try to imply I don't shower regularly you will look foolish.

If I stink, then it's either uncommonly hot and humid or I have not yet had the opportunity needed to shower. The hows and whys of this are not important; but generally if I choose not to shower, it's probably for a good reason.

I do suffer from some allergies and disabilities. I won't comment on what they are specifically, but they do exist, so I keep my fragrances light and unobtrusive; and I try to shower only when I can manage to handle doing so. I'm not going to uproot or upset my health, focus, peace or routine just to take a shower to please someone arbitrary; but I do allow the people whom I live with and love to remind me gently should I forget about addressing my BO in the chaos of life.

This isn't saying that I don't care. It's saying I'm imperfect, I have a life, and I do get overloaded sometimes.

I've noticed a lot of people don't do things the way I do them and it bothers me too!! Stomp your right foot with me if you agree!

I just don't like them. I like the natural body odors, even with women, I hate it when they cover that up with some heavy perfume.

For me, it was because my mountain bike gear was being washed on cold as heat screwed up the Eva foam in the knee pads and body armor. The jersey also got washed cold, so bacteria never got killed off. When it got hot, the heat would activate the smell, but it's hard to tell when you are going fast down a trail.

Once I started washing everything possible on hot, it stopped a lot of the smell.

I assume people are doing that with non-mtb clothing and getting similar BO results. So it's quite possible it's also not necessarily them, but their clothes.

I don't apply deodorant at all. Maybe before I know I'm about to be active, but even without it, it's fine, I shower after anyways.

The reason folks have given for ignoring their hygiene is that it’s an act of radical self acceptance or bucking societal expectations.

But, honestly - I think it’s because there’s an expectation for the “4chan khv” clique. Typically their views/personality don’t fit well others. Folks find a sense of identity and even belonging in being a repulsive caricature.

Never tried using deodorant. I didn't like the idea of using it. Showering has been enough for me. (I'm 32)
Nowadays I have a skin condition in my armpits so I don't think it would be wise to use that stuff anymore anyway.

I find the ones drenched in foul smelling deodorants smell far worse.

I am not of those you are describing but in general: Some can have (afaik) genes that do not necessitate the use of deodorants.