A theory
This might be obvious but already known but as you know meta has been cracking down on child safety qnd i think i see why some not all ar egetting cse bans.
As you know they did aggresively push teen accounts and i think this may be the cause for SOME bans interacting with teen accounts.
My evidence for this is myself and a few friends
For me im 18 but some firends of mine are 16 some 17 and one of my friends younger brothers is 15 they all have teen accounts i do not my bands started after i was 18 for child exploitation and i realize that interacting with these accounts can get you targetted i never did anything crazy but the ai doesnt knkw talking with friends from genuine abuse.
Another piece of evidence i have is one of my former classmates hes 18 as well but his gf is a year to a year and a half younger than him she has a teen acocunt as well he got flagged nad almsot banend various times for the same reason child exploitation elthough theya rent in a bad age gap or abuse the ai still flagged them.