What do you find to be cringe about vegans?

I'd almost extend this to any kinds of trickery about what people are putting into their mouths. The consequences can be lethal at worst.

A bit unrelated but at a previous work place the guys there put viagra into another guy's food as a joke where as I would've considered that borderline assault.

You articulated some of what I was about to write up.

Do what you like to your own food but never, ever, ever intentionally mess with or disregard someone else’s food restrictions. Doesn’t matter if you disagree with them or think they’re “making it up.” At best it’s a violation of their agency, and at worst you could kill or seriously injure someone. Stuff like that is scary.

I knew a woman who almost killed her son in law because she believed his shellfish allergy was "made up".

I hope they broke up after that, that's fucked up

only tangentially related, but I found out something quite the opposite this week which is pretty funny: the "steak" flavoured crisps in my supermarket are actually (probably) vegan. I checked the ingredients and the "meaty" flavour is actually just paprika, salt, and pepper lol. Nothing on the ingredients looked to come from any animal. So the flavour being called "steak" is just a marketing thing. I suppose when you condition your brain by telling it you're eating "steak" it just kinda accepts it and it does somehow taste kinda meaty in a way. But it's not.