When I first signed up for TikTok it showed me stuff to figure out what I would like. It showed me some of the most racist humor I'd heard since I was a boy in the deep south. If I'd liked it, it would have shown me more and more and more of it. As it is, I don't see it now because the algo feeds me stuff I actually like.
I do think there's a content problem on TikTok, but I think it's hidden away from the people who would point it out due to the way the algo works.