This is my concern as well. Twitter already has significant issues with this. But based on Dorsey's Rogan appearances I get the impression that he was never entirely comfortable with playing the arbiter of truth/acceptable content outside of high profile cases. He deferred to his trust and safety team most of the time, though you can still find a lot of enclaves that a platform like facebook might have preemptively purged.

His successor could very well be much more aggressive in this respect.