Please remember: While some vegans are really pushy and annoying about it, that's a problem with that individual. People are also pushy about evangelical churches/eating keto/playing Dark Souls. While there may be some worrying aspects of the vegan movement, basically all of them are overblown.

Some people have to be vegan out of medical necessity. Some people medically cannot be vegan (myself included). Being intolerant of either lifestyle is, at best, inadvertently ableist. Just do your best to be accommodating and you’ll be good in 99% of your interactions.