If I search for The Best of Both Worlds but open the video to find it's csam and not st:tng then I've unwittingly started watching, and thus potentially seeding, the csam.
I understand the worry, and it is a difficult problem worth thought but the alarmist virtue signalling helps absolutely no one, victims included.
I listen to the Butthole Surfers and Amboog-a-Lard - I'm willing to bet a good portion of their material has less seeders than much illegal content do.
A product doesn't need to serve EVERY human on earths needs, just enough of them that it can become large enough that established legacy solutions need to adapt.
I get why you might think this wouldn't be a fit for YOU but rather than argue against it from a niche viewpoint instead maybe look at how if it did exist it could be good for many.
Peertube has moderation.