The last time this was proposed there was quite a bit of concern about how uploads weren't viewable by anyone and could/would be abused by 3rd parties as an anonymous way to take down rival content without any recourse against another OnlyFans producer, to cause headache for a FB friend, etc.
It looks like this system, as opposed to NCMEC, is opt in so maybe some of these issues have been resolved?
That's why you find them being passed in conservative and ultra-religious states: Utah, Texas, Oklahoma