Those who know what they talk about should edit the article to make it clear that it is notable and encyclopedic, if it is indeed so. "Argument from authority" only goes so far on an anonymous wiki -- but true authorities can provide evidence beyond themselves for what they say.
That happens. It rarely works however, because those who do not know are unwilling to change their vote or are "drive-by VfD-voters." That is, votes on an article then goes to the next one and votes again completely forgetting about the first article. Besides, with the VfD-scheme those who do know only have a few days to prove themselves. Which is not a lot of time if you have other things to do than edit an encyclopedia.
PS. Top posting sucks.