It's a community thing. On en.wikibooks, our bureaucrats simply won't pay attention to irrational and poorly supported votes. Bureaucrats are able to use their judgement to consider the quality of votes above the sheer quantity of them.
In theory enwiki is the same. It doesn't really matter, anyway - presumably it's just one vote, enwiki RFAs have high enough turnout that one vote is rarely going to make much difference.