I hadn't thought that but as empathy is the most important emotion there is in my opinion, I can certainly relate to that view. When I became vegetarian I was very depressed and thought that no animal was worth sacrificing to keep me alive but that was then and this is now. Nowadays I am vegetarian for medical reasons (as mentioned and I've always had this), partly for ethical reasons (damn empathy) and also because that's the only food I can cook lols. I don't know how accepted vegetarianism in the Fandom, I would guess probably no more or less accepted than anywhere else but as you say, the open and tolerant aspect of the Fandom probably means most people aren't too bothered about it.