Deepfake stuff, now that it's trivial to produce, is going to be used for an infinite amount of harassment, constant "look here's a video of AOC kicking a dog" posts, etc.
The problem is that the potential for truly positive stuff is minimal and the potential for truly awful stuff is unlimited. That's even ignoring the fact that the massive energy and water costs of these technologies is going to be a massive ecological disaster if we don't get it under control - and we won't, because the billionaires running these systems donate millions to the politicians voting against these protections.