I genuinely sympathize with David for struggling with mental health issues.
And anything that can help him rekindle his creative joy is something I applaud.
The thing is that his AI project is more something for him to play and experiment with, to see what's possible.
The point he's making, that everybody can now make something resembling a live action movie, is indeed wild, if you look at the big picture.
But what he showed in the trailer is not yet of the quality to be published as a feature film, and I don't see a lot of people being eager about attending a movie theater screening to see it.
To put this in contrast: I recently saw the pilot episode of the AI-generated Dr. who fan series on YouTube. And the quality of that really blew me away. I actually found myself enjoying it, with it really feeling like a Dr. Who episode. That episode was done so well, that the (completely AI-generated) characters appeared real, unpolished and relatable. The person who prompted the scenes obviously went through the effort (and no doubt lots of expensive tokens) to get the AI to generate convincing scenes with the right atmosphere.
It did get a few things wrong here and there, including one character with different eye colors in different scenes that took me out of it a little. But all in all, it felt like a quality production, and not slop.
So it's not that you can't do anything impressive (or even something that could genuinely be considered art) with AI. It's that it still requires a great deal of effort, even with these incredibly powerful tools, to make something that goes beyond the level of generic slop.
And in that sense, David should play and experiment with it some more before committing to making something truly impressive with it, which would take a great deal of his time.
But maybe this is truly his new passion. If it is, good for him, and I genuinely wish him lots of fun, fulfilment and luck with it.