I can resume everything I hate about lots of thing, including this fandom with: Humans... haha but being more specific and talking about only this fandom I'd say that the own people:
- The common furry attitude: Acting like an overly friendly being, trying to be cute at every moment, being overly childish. This includes as some has already said, the emotes and the constant or perma-rp at every conversation.
- Being a stereotype (common bored furry)[involves mindset, specie,likes, dislikes]: selfexplanatory, I think most people already know some of them, like being a fox, wolf, cat, tiger... and then justify that they're the perfect animal for them for being XYZ and because those animals are too (even when they know nothing about the animal their talking about; really, I've seen that lots of times). Being very ignorant and childish about most things, and something they agree, is that dragons(no real animals) are the only acepted reptiles, this also covers the intolerant/speciest mindset they have "If it isn't a common animal, then we don't like it".
This one is mostly seen at young people, and no those who barely starts at the furry fandom; they never do some research about some things they may like and are into, and not even know what furry means. And they always call any videogame character, canon or animal, a furry...
PD: When I started and made my scaliesona, almost every wolf, fox and bunny from 3 different sites, told me I was a bad person, they were scared of me,I was better like a wolf for bein "dominant and rude" but if I liked more scales I could been a dragon instead... (?
- Drama / Fallacy - Ad populum: 2 things I've seen a lot since I started but alway stayed away from them... even when some people tried to involve me.
Most people just don't like to hear/read/know anything that isn't "good" or "aceptale" for them or a certain group their into, in this you see again the stereotyped attitude, specially when someones say something "bad" about a certain theme, person, or justanything related with the fandom; this can be a constructive or destructive critic, a comment, even the "wrong"/ use of an emoticon, or just put a dislike to their comment(post/tread, and then they just explode, cry or scream to everyone and just makes some drama. At those situations is also seen the Ad populum fallacy, wich increases the drama because more people feel insulted because someone doesn't like, support or just follow somethine lots of people do.
Also, this fallacy increases some bad aspects like ignorance, misconception, stereotypes, etc. because as "everybody does that, then I'll do it too so I get accepted" and that's something quite common at younger ages, but still is a problem because they end being an unoriginal cringy person (? and just uses this "argument" as an excuse.
I have more and could explain better, but I think I already wrote too much