Honestly, why not. That would allow them to get more aggressive with enforcement for untagged streams, allow them to keep the obviously impression generating engine of the "Just Chatting" OnlyFans crowd, and maybe even with the weight of Amazon behind them, force the credit processors to lighten up a bit.
Or it would be nice if they could, anyway. In reality with the age verification laws popping up in more places, they probably want to stay far away from the impending bureaucratic and legal nightmare.