It's not about whatever's supposed to pass for "realism" in the context; it's about devs paying attention to detail so they don't do half-assed dumbfuck shit like say blithely sticking dog cocks on hyenas because they didn't do their damn homework and just derped "sorta looks doggo = totally a doggo" instead, which happens far too often.This is what upsets you? Because some furry game isn't realistic enough?
If you're going to use some theme, do it properly is the point.