These are vtubers we’re talking about. Evaluating serial shonen manga or whatever is a little bit different.

And, like, that still doesn't really justify the gratuitous sexualization of minors. Like, is getting teenage boys horny really such a deep societal need that it makes it more okay to depict teenage girls in such a sexualized way? I don't think those boys need the help, they'll get horny just fine on their own, and that has the added benefit of not flooding popular media with scantily-clad cartoon schoolgirls.