So here's something autistic. I noticed that some Holos now have this link in their video descriptions:
https://en.hololive.tv/request-to-minors
The date on the page is 6 December 2022. I pulled up a random stream from Sora from before that date, and the link isn't there.
Anycolor also has one, dated 31 January 2022:
https://www.anycolor.co.jp/notice-for-minors-en
This is just standard corpo CYA, as I cannot imagine that zoomers would read the video descriptions, let alone the notice. That aside, I remember a short discussion here about whether there were any child-friendly Vtubers. I think even if coomtubers were removed from the equation, the space simply isn't designed for minors. Because of that, while individual Vtubers may choose to keep things PG (and I personally appreciate that), I'd distrust any Vtuber who actively advertised it.