Actually, TikTok seems to do a good job. They understand they have a lot of children on the app and they take that very seriously as a responsibility. Unfortunately their solution is over-the-top censorship but it works better than other platforms from what I've seen. They used to have a "no politics" policy where TikTok simply wasn't a place for politics. They scale moderation by simply over-moderating and that is in line with their offering of a curated feed as opposed to a "platform" for arbitrary content delivery.
No politics? My fyp highly disagrees. However, the algorithm is amazingly good at keeping you in your political in-group.
You'll often hear content creators talk about "getting on the wrong side of TikTok" - meaning they started getting recommended to an out-group. (For example super cool super funny @melissadilkoateras ending up in MAGA feeds occasionally).
Cue brigading of reports, community violations, etc until the audience stabilizes.
I think the reputation is due to the zealous take down policy and the solid profiling that keeps you in your comfortable content window.
