CD players did not spell the end of live music. I have never really understood people who pay money to OnlyFans models but I do think its not just to see some boobs on a screen? its to experience a (para)social relationship with another person.
Most of the experience of a live performance (especially for pop artists) is in being there, with a crowd, and the soundscape of a giant auditorium or stadium, so the lip-syncing doesn't matter much either way.
Do people honestly convince themselves some stranger performing on the internet in a very one way relationship somehow truly cares about them and not their ability to monetize.