Here's the current leaderboard, Squishvegan is their name (and #2 in the world is their alt lol). If you go to their profile, they have links to dominion and other vegan resources.
Idk why I'm making a post about it, just thought it was really cool. Most people I run into in any game start acting weird if you even hint that you're vegan and this person is just yelling from the rooftops about it.
It's sort of rare but not unheard of, I haven't played in years but there are some people who just really enjoy certain classes/specs that want to do raids/m+ more than the daily/weekly lock allows for. It was relatively common in Legion for no lifers, especially people in bleeding edge raiding guilds to make duplicate characters because the legendary drops were randomized and permanently locked to a character, some were dog shit while others were class defining and you could get ones that weren't even applicable for your spec.