Celebritarian obsession was accelerated by Photoshop fakery. Why would AI be any different? Auto-Tune didn't kill interest in pop.
Hatsune Miku is a Vocaloid. Gorillaz isn't an actual band. These aren't new ideas. They seem to have been roaring successes. vTubers seem to do alright too. Deepfake porn and VR porn seem to do well too. Plastic surgery is popular too. Wigs, makeup, veneers, all very mainstream with consumers. If anything, there seems to be a good demand for escapism.
Why do people quote movies? Why do people obsess over lore? Because it resonates with them. It doesn't need to be real to appeal on some level.
When so much of life is "fake", what difference does it make?
However, is it all OK for mental health? Well, we know the answer to that.