>>51614941I realize we have to modify the rules a bit for vtubers, but yes concerts are still generally performed live. If you mean vtuber concerts, I don't think there's ever been one that was done 100% live. The logistics for doing a singing + dancing + putting something on the screen for the audience to see in real time enough that there's no delays and no uncanny stuff putting people out of the immersion is a lot more challenging. People have tried it to mixed results.
However, for vtubers we have to allow that the limitations of being in person and in front of the audience are not plausible by definition. In person maybe, but they perform by a virtual avatar no matter what. Thus, not requiring them to be, like, full 3D and dancing while singing or playing instruments or whatever is forgiveable, but they should 100% perform live to the audience as there's nothing stopping them from doing that.
I find it far more odd people are overly accepting of prerecorded videos and / or with stand-in dancers utilizing the model to move about. I want to see the person perform, to showcase their skills. I don't want to see a paid dancer move about lip-syncing (usually badly) to a song done in a recording booth with editors and mixers turning it into a perfect piece of medium to be stored on a sound file for downloading on your Spotify. There's still an art and pride to this, and it should always be one person, one microphone, one audience, and you convince them that you are worth listening to. If I want to hear their prerecorded shit, I'll go listen to a prerecorded file somewhere. You're on stage, perform!