> > If YouTube's algorithm is deciding what to show me, then I (as the user) am asking for YouTube's opinion. So I think that there is a coherent argument that YouTube's recommendation algorithm is expressing an opinion, and is therefore YouTube's content.

> To me it seems like a platform could easily skirt this by having users opt in to recommendations (and maybe even choose a sorting criteria option) at signup.

How does opting in make any difference, for this particular point?