well most of onigashima hasnt been offpanneled. so why would it be now?
What gets offscreened are upper tier fights that Oda wasn't ready to show (years ago, now it's different) or things that didn't matter in the long run (Kiku fighting Kanjuro because he's back up, Mink Kings fighting Jack cause he's back up, Sanji vs P1 because he was totally fine at Onigashima).
Like I don't even expect P1 to be down still at this point, even though it WAS on screen