What should I take away from Mark Zuckerberg's testimony on Capitol Hill?

Well, the clearest thing is that almost nobody there likes him. The only compliments he got were from Republicans comparing him to Trump, which Zuckerberg must have been slightly happy about, but maybe not. The other thing I think, I think Facebook is making a mistake having him out there so much, having him gives speeches about free speech. It sets him up as a target and puts him in situations like this where it didn't go very well.