>>76423193The trick is plausible deniability. As long as the vtubers say that the source of the sussy noise is "slime" or "glue" or "idol honey," they won't get bonked for it; all they have to do is not explicitly say that it's their pussy juice, and YT will pay no attention.
Plausible deniability is also the reason why Mono Monet chooses not to use her 3D model for her membership ASMR streams, since the hand tracking will make it look like she's doing what it sounds like she's doing, which in turn would make it much harder for her to pretend she's doing literally anything else. Obviously she's doing what it sounds like she's doing, but she can't be TOO obvious about it, hence why she coined the term "idol honey".