I don't think audio, image or video generation should exist. I haven't seen enough positive applications to justify the amount of harm these tools are being used to cause.
Now they cause harm because there's people that may believe a fake video is real. But people is developing skepticism about what they see in videos and learning to think that they may be generated, before taking them as true.
For everything that exists, there are people who think it shouldn’t exist. Fortunately, society doesn’t ban everything that disagrees with some people, and even more fortunately, we now live in a multipolar world where what is available doesn’t depend on the whims of a single pseudo-moralistic government.
If in the future they can create a reward model to aid with creating super human levels of appeal tailored to me, I would considered it one of the best technologies ever made. I'm not sentimental about the source, pretty videos and pictures make me happy
What kind of harms do you have in mind?