But seriously: at best it's going to be a big "maybe, it depends". These services bounce between PR disasters of "complicit purveyors of propaganda" and "oppressive algorithms destroying free speech", so you can't rely on them to be on either side.

As deepfakes get better, the algorithms will have worse detection rate, so it'll end with Zuck testifying to congress that Facebook doesn't want to decide what is real, so everyone can post deepfakes all day long.