A lot of r/AITAH (and reddit in general, really) is just rage-baiting trolls out for the lulz, karma-farming bots, etc. I suppose it’s good entertainment if you’re really bored and there’s nothing trashier on TV (the bar just keeps getting lower, doesn’t it), but don’t think too much of it.
As for the vegan stuff in particular, though:
Oh yeah, definitely.
Anecdotally, I’ve been vegan for nearly two decades and have met quite a few others through potlucks, gatherings, and such (there’s almost a hundred of us in the world, I swear!!). We span the spectrum of militancy, from “righteous crusader who will not deign to see an animal frown anywhere within 500 miles and will interrupt your restaurant meal to spread the good word” to “oh yeah, by the way, I’ll probably bring my own food because I have dietary restrictions”.
I’m more of the latter. My family collaboratively cooks and hosts a big mixed Thanksgiving potluck every year. It’s mixed both in terms of dietary restrictions (vegan/vegetarian/gluten-free/pescetarian) and cultural backgrounds, so it’s a bit of a free-for-all fusion buffet with enough food to feed ten people for a week. Some of the aunts are blessed with culinary ability and can make extraordinary vegan dishes that even the meat-eaters enjoy. But some of the attendees are obligate carnivores who eat nothing but the BBQ ribs. We all just get along and people eat whatever they want, but we do make an effort to separate the dishes and label them appropriately.
But here’s the thing: If anyone insisted that anybody else eat like them for any reason, we’d all just look at them funny, like “Are you ok? Do you have a fever? What’s wrong with you?” Not only would we not take them seriously, but we’d suspect some sort of brain injury on their part. Nobody in the family is an extremist asshole (of any type), thankfully.
I also sometimes host friends or go to their places for dinner, and it’s up to whoever’s cooking whether to accommodate the diets. Some cooks take it upon themselves to experiment with new internet or YouTube recipes, to mixed success — personally, I’ve found the best vegan dishes to often actually come from omnivore cooks who are just really good at cooking to begin with and willing to experiment, vs the ideological vegans who cook because they have to just to eat. But in this case, too, it’s expected that everybody will just be chill and respectful. Sometimes I bring my own food, sometimes I cook, sometimes they bring their own food, sometimes they cook… it’s just not a big deal. We get together to enjoy each other’s company, not to fight over food systems. Nobody wants an annoying, demanding asshole around, regardless of their reason.
(Edit: I should note that I’m younger than many on the boards here, being in my 40s. Many of my friends are also Millennial or younger, and we grew up with dietary differences already embedded in pop culture as a norm, so it’s not a big deal to anybody.)
I took this to mean “the person with crazy dietary restrictions” is always a she, not “the asshole is always a she”.
If so, in my experience, the overwhelming % of vegans I’ve met were indeed women — probably 80-90% of them (and this number corresponds to at least one study: BBC: Why are there more female vegans?). My guess is that it’s largely cultural, since meat is so often tied to masculinity (at least in the West).
I don’t, however, think the level of assholeness/militancy is tied to gender. Age and general lack of life experience and interacting with people of different backgrounds and values, more likely.