It would be more resilient indeed, I think. Definitely needs a way to figure out which users should have a good score, though - otherwise it's just shifting the problem somewhat. Perhaps it could be done with a reputation type of approach, where the initial reputation would be driven by a pool of "trusted" open source contributors from some major projects.

That said, I believe the core problem is that GitHub belongs to Microsoft, and so it will still go more towards operating like a social network than not - i.e. engagement matters. It will still take a good will to get rid of Social Network Disease at scale.

Reputation doesn’t equal good taste in judging other projects.

There are much better ways of finding those who have good taste.