I have yet to watch the final episode, but nobody can accuse this series of being short on ideas. This show often felt like 3-4 different shows at any given point and couldn't make up its mind. I didn't dislike this show, but I can't say I loved it either. Depending on what else is airing that season, I might be swayed to give it a watch, but I probably won't go too far out of my way for it.
Maybe the Japanese Pii-chan sounds too much like English slang for urination, i.e. to pee, for English stream services' liking.
The one in this show isn't even the first P-chan that I know of in anime: This character from Ranma 1/2 https://ranma.fandom.com/wiki/Ryoga_Hibiki has a cute pig form that's nicknamed P-chan (see Nicknames in the sidebar).
It sounds like this type of name might be common Japanese practice for naming pet animals, although I don't recall any other characters using other letter-chans for pet names, like I can't recall a Z-chan, or a N-chan, for example.
That sounds like too many episodes to be the dreaded 'recap of the episodes I just saw with the actors narrating how their characters felt about each scene'