I'm honestly not interested in 23andMe so I never bothered to fact-check so take this with a massive grain of salt but I did watch Linus (from TechTips, not Linux) rant about the privacy problems it has. I don't trust him about these things but I've also watched him rant in favor of letting the ~~spyware~~ consumer features of Windows stay on because they're so great and it's not that big of a deal, so 23andMe has to be doing something very, very wrong.

Dare I say it?

Man did you look in the mirror? 😂

This only tells you about your very recent ancestry, but go back enough generations are you are descended from everyone alive at the time who still has living decendants, just like everyone else.