My wife and I are mostly vegetarian (vegetarian, plus meat once per week plus leftovers or every other week) just because we like it more, environmental reasons, healthier, etc. We have zero problem with 95% of vegans, I'll cook vegan meals if any vegan friends or friends of friends are coming over, eat at mostly or fully vegan restaurants if going out with vegan friends, etc. It's not a big deal and has no reason to be one.
However - I say 95% for a reason. The 5% are people like my MIL. She lectures us about how eating any animal products is wrong every time we see her, spouts bogus facts with no actual sources to anyone she can get to listen (going vegan will cure cancer, diabetes, and autism within 8 weeks), and is generally insufferable to be around now because she will bring it up out of nowhere.
I don't hate vegans at all, I hate people that are pretentious assholes about being vegan
Evil is a relative term. I could argue that capitalism is evil, or buying things that can't be recycled, or Catholicism. Maybe start with asking yourself how you justify doing things someone else might think of as evil before using it as some sort of magic bullet argument.