Maybe it's changed but I was heavily involved in the vegan and vegetarian community online about 15-20 years ago and there was absolutely no purity wars. Honestly, it was quite supportive and very much "everyone does their best and everyone has different morals" kinda place. I was still a young adult back then trying to learn to navigate life in general and vegetarianism was an entirely a new concept to me, so it was helpful.

But "har har, vegans are all crazy toxic assholes, amiright?" is a popular trope, no matter the factuality.