Not sure whether the video that get share out of TikTok are the ones average user make. For many it’s just fun filters, big music library and a way to share video with friends. I doubt teenager randomly dancing on a music, or sharing pics of their horse-riding lessons try to make money on-it.
While we do Drama about [Insert open source developper name here] we have open and closeted nazi owning social media and big software companies. So I think we should better focus on them than on whatever Drama in the FOSS world