[boltzmann-brain]

Vouch is a good quick fix, but it has some properties that can lead to collapsed states, discussed in the article linked here: https://news.ycombinator.com/item?id=46938811

[a-dub]

it's also going to kill the open web. nobody is going to want to share their ideas or code publicly anymore. with the natural barriers gone, the incentives to share will go to zero. everything will happen behind closed doors.

[tolerance]

You could argue that this could increase output to the open web: outsiders still need a place to clout chase.