Ease of creation shouldn't have a bearing on whether or not the final result is illegal. A handmade vs AI generated fake nude should be treated the same way.
Instead of banning specific apps, ban the harvest and sale of personal data itself. Then the apps people want to use are still given a chance to exist if they stop mining data.
Of course anyone can live without YouTube, that doesn't mean there isn't a lot of enjoyable content that I would miss without it.