You say "CP" like it's a clearly evil category, but there's people out there that insist that fanfic about characters in a kid's show kissing is in that category. So, no, I don't really trust moderators to permaban that.

That said, yeah, actual CP should still be a permaban. We all agree on that. But treating it as a cut-and-dried example illustrates exactly what hnaccount141 was saying when they said "these large-scale moderation systems (automated or human) tend to lack nuance and context-awareness, leading to false positives"