There is no such consensus. The RfA system works for
you because you
use it, as do all the others who participate. There are far more people
who just wash their hands of it., and just limit their activities to
some narrow topic.
On Wikipedia "consensus" is used to mean "consensus of people that
decided to express an opinion". We don't hold referendums on policy
decisions. Every time a proposal for a new system of selecting admins
has been discussed, it has been rejected. That is a consensus to keep
things pretty much as they are. It's possible that some new proposal
might gain approval, but none have so far.