How to not be seen
Maybe from their perspective they're correctly doing it their way, instead of, as in your perspective, failing to do it your way.
The "different persona" stuff is responsible for some of the most serious abuses the industry has surfaced, and the increasing treatment of VTubing as an avatar is a direct consequence of that.
Hamlet dies on stage. At the end of the play, he gets up and an actor takes a bow. This does not detract from Shakespeare.
(aside: I think the possibilities for vtuber theatre have been under-explored in favor of musical performances, but that's probably just a matter of audience taste again)
But against the flood of videos even before all the AI-generated content churned out by people who don't care about quality, I think I will instead just not make any.