Since you have marked this as a community post, I’ll take the bait.
I personally think some degree of leeway allows people to find content they like and stick with it.
For example. Take person A, B and C.
Person A likes mostly abuse-based works. Fluffies that run in circles or hide behind their hooves when their smarty gets its head caved in with a gardening tool after a failed lawn invasion attempt. Humans being literal avatars of blood and violence being given a thumbs up by their hot neighbour.
Person B likes exploring the struggles of an extremely naive and physically weak species having to come to terms with the realities of life, desires, aspirations and feelings, but feels that, if they are borderline retarded, they’d never be able to spread, regardless of sex drive and fertility, and that stories where the whole plot is “fluffies die because hooman can” are more boring than watching paint dry.
Person A and B will rarely enjoy the same works.
If all fluffy works were to follow the exact same standards, diversity would suffer. Badly.
Meanwhile, slight deviations I find acceptable.
Fluffies able to figure stuff out instead of hugging a wall and expecting it to open.
Fluffies who can run (like that one image of the purple fluffy being marked with a white lightning) instead of waddling.
Different artists’ renditions (some have stubby legs, others depict them as having horse-like ones).
Moronic, contentious depictions of fluffies as dinosaurs (outside of weirdbox-based works, of course. A human running after a fluffy, only to come back with a furry dino on a leash would make me chuckle) are a good example of “it’s obviously too much”, as the general shape and size widely accepted and used gets the boot.