[SideburnsOfDoom]

> Sure, but are they publishers, or hosters?

If a platform chooses a video to play next, based on "what we know you like, what we think you'll like" then it cannot be a mere hoster. Choosing means making a choice.

Youtube has been called a "radicalisation engine" with some evidence for that (search terms: "youtube radicalization", "Algorithmic Extremism"). This might just be a terrible consequence of "maximising engagement" rather than pushing a fixed political agenda. But evidently, they want to do better.