Except that Facebook's algorithms (like YouTube's, and I'm sure others as well) push people towards groups and sources with "high engagement", which often tend

Except that Facebook's algorithms (like YouTube's, and I'm sure others as well) push people towards groups and sources with "high engagement", which often tend to be conspiracy theories and hate groups. It's not that their algorithms are trained with poor data sets; it's that they're trained with good data sets, and those data sets show that this right-wing, radicalizing content has huge engagement numbers. Thus, since engagement and time-on-site are surely key KPIs for Facebook, promoting those groups exactly fits with Facebook's stated business goals. Facebook needs to be political, because they're destroying society and democracy for profit; in the early days they could have been forgiven for not realizing this, but in the last five years I think it's become incredibly obvious that it's happening, and Zuck is doing everything he can to shirk the responsibility of not screwing everything up for everyone.