I don't know the word yiff?
There are so many ways that people dress in cosplay (let alone crossplay) that could be considered someone's fetish somewhere (schoolgirl outfits much?), I don't think that that should automatically rule out someone who is wearing them for other reasons being comfortable to do so.
There are people who come in HP (Harry Potter) cosplay and I love it, it's not anime but it's a huge fandom. At Creation Station we've always opened our fanfic contest to fics from sources other than anime and manga per se. A lot of them are from, e.g., the Final Fantasy game series. Sometimes we've had HP; and yes this year even a Metroid (game) x Star Wars crossover!
If folks can come in HP and that's acceptable, I see no reason why Star Wars wouldn't be, especially since one of the larger and better-loved of our panels is I'd Just As Soon Kiss A Wookie! Star Wars panel!
Personally I staffed Anime Evolution one year as a dolphin from Hitchhiker's Guide to the Galaxy. Wearing a sign that said "So Long, and Thanks for All the Fish." Not everyone got it. But those who did gave homage
And I made the costume out of plushie halloween costumes sold for 4 year olds....A couple of those sewed together. It was actually really comfy, and warm.
So I'm not clear, if dressing as an animal (albeit as a character in a sci fi) would be considered being a furry?
Or if the material the costume is made out of makes the difference?
I'm not clear what everyone has as definitions of furries and anthromorphs, or why there is such disdain thereof?
I've seen people come as Sonic the Hedgehog, I don't see anything wrong with such?
Many people came to talk about how to move art from anime to anthro, with one of our staff.
I beta'd a piece for an academic journal that was on werewolves and other shapeshifters in anime and manga, and it profiled their precursors and inspirations in Japanese and Ainu (indigenous people of Japan) culture and mythology. If someone dressed as someone from Wolf's Rain would they be furry and anthro at the same time?
Please help me understand this. Generally I don't like biases in any form. It seems odd that there would be biases BETWEEN FANDOMS.