[mchusma]

I have long wondered why these companies have only one model? Why not many models, letting the user choose? Why not let users tune what they want to see? It seems like a better user experience and safer from this type of (IMO valid) concerns. I’d want nothing to do with picking a users feed if I were them.

[Timon3]

Because better alignment with user interests would hurt the companies own interests. Their goal is to maximize profits, so even if they have multiple models available, they would choose the one predicted to maximize profits generated by you.