@Thandal ... I totally agree, because it takes 3 users to actually bother to correctly tag a mod for that tag to be applied, however, by then it's already too late, although I guess you could call it some form polite or altruistic gesture so that others don't have to wade through the blocked content as you did.
Two things however stand in the way, or at least could be changed by the Nexus themselves to help the "broken' system.
One is that mod authors can actually block users from suggesting their own tags, Which I don't think should be an option.
Second is that that at least having 1 "tag" should be compulsory.