That was already a major problem when the platform was still called musical.ly and not even remotely as big as it is right now. So this is a problem which is relevant enough to report upon without the need of someone paying for it.
Facebook/Meta has been very aggressive in trying to get the US to ban Tiktok from Trump's time in office (also was the subject of secret dinners b/w Zuck and Trump).
Although the story itself is pretty reasonable... the problem here seems to be that these services are public by default for minors.