Sure; but if facebook shows me 1% of all the content from people I follow, it exerts a huge amount of editorial power. And it doesn't use that editorial power to serve users. It uses that power to keep people addicted to the site so they can sell more advertisements. The fact that my friendships are weaponized doesn't make facebook any less culpable.
I'm a pretty nice guy. But if you made a supercut of 1% of what I say in a day, you could tell any story you like. It would be my words, but its your narrative.