People will not maintain complex (or even simple!) trust scores, but they will maintain their following list and they will mute people. All we will ever have (IMHO) is that.

Trust is indeed much more complex. I may trust you to show up at the pub, but not to hold my beer. And because of it's complex nature, trust is not transitive or delegatable. But we're never going to be able to maintain representations of this.

So I think that means I agree with you.