Okay wow I was not expecting my kittypet fae post to take off overnight like this, but I'm glad you all like it! I've been thinking about kittypet culture so this is what I think is the reasoning behind the beliefs.
Kittypets are often well groomed and well fed no matter the season, while wild cats are often groomed there's a softness to kittypet pelts that you don't find in wild pelts. Along with pretty accessories that a wild cat would have no clue what they are like bows. As such they start to seem a bit uncanny valley because they look like you but not Quite. Especially because of more purebred cats who have brighter pelts or unusual colors or strange muzzles or weird ears. Which helps spread the thought that kittypets aren't fully cats, but something similar, something different but the same. Firestar as a purebred orange cat is just a lot naturally brighter or vivid then the more muted oranges that appear in the wild, and that scares cats.
Kittypets also like to share with their wild friends, they see their friend skinny and cold and want to bring them inside where they can get food and get warm. So they tend to offer it pretty often, however cats that do this start to get used to the ease of food and warmth of the den and find it harder to stay wild or to stay away from twolegs. Some kittypets may even aid twolegs in trapping their friends for the sake of protecting their friends from the harsh outdoors. Which everyone knows once you've bonded with a twoleg whether you want to or not your transformation into one of them is nearly complete.
Kittypet food is also meant to fill a cat as its been fine-tuned to fit the needs of a cat so even if a cat doesn't think it tastes as good as mouse, it still fills them in ways they may struggle to get with hunting. So cats that risk taking a bit start to go back for more, especially in harder hunting series. Sure sparrow may be a bit tastier but if its a sparrow once a week during leafbare or kittypet food every day, cats are going to be tempted.
With kittypets not being in a war culture and often just chilling beyond mild spats means there's more room for other activities like a lot more gossip and stories, news travels fast between cats because kittypets are horrendous gossips which means if you fuck over a kittypet, every other kittypet is going to hear about it and shame you for it. To clan cats it's shocking because kittypet news travels throughout an entire twolegplace and even beyond it thanks to some kittypets that travel in like trucks and stuff, so it can seem like despite being nowhere near the original kittypet, everyone still magically knows how you messed up. This extends to their friends as well, if you beat up a cat that the kittypets consider a friend over a border dispute all the kittypets are going to be like "hey why'd you do that that was mean" and potentially chase you away.
Now for names is something I think is interesting because kittypets are never really like "my names Mouse but the twolegs call me Mittens" so clearly twoleg names have some priority here for kittypets, while the significance of this can very between whatever you want really, its clearly important. So if you get taken in by a twoleg to heal a wound and the twoleg starts calling you Pants, then suddenly all the kittypets call you by that name. No matter how much you insist your name is Twigpounce, you're Pants now. Plus if you're actively stuck with kittypets, you'll start going by Pants as well. Thus the kittypet's steal your name.
Cats that come back from twolegs always come back changed, from how they talk, to how they walk, to what food they eat, to the things they say. They can still shake off the influence and return to the wild, but they'll always be a bit off, a bit different. Everyone knows Tallstar was pet-touched a long time ago from how he acts, but everyone politely doesn't bring it up.
Avoid kittypets! They're tricksters that look like us but they're liars with their fake mice and fake warmth! Do not trust! They aren't true cats! They're something different! Something more dangerous! Do not be tricked!
Also Longtail still throws down with Rusty because he's an idiot and also probably hoping that this will make the scary fae child leave his clan alone.
