using an anime avatar on your account is on a completely different level than tying your whole personality to a character and living your online presence as said character.
Vtubing is the attempt of 3D trying to be 2D and that's impossible to work in a non-toxic way
It's like idol culture but much worse. At least real people who work with 2D like seiyuu and haiyuu don't try to become the character itself, not to mention they show their real faces all the time