The English Wikipedia might (or might not) have achieved this but certainly the Croatian and Polish were caught to be heavily influenced by right wing extremists, the Hungarian was not yet because no one gives a damn.

But my recipe of adding anything to Wikipedia still stands, I adopted it from an article added by Hungarian nationalists: while you must source things, the quality of the source is not checked. So take an obscure book, obviously not in English and claim your fact comes from it. No one will try to dig up a small run German book decades or even hundreds of years old to verify. Or will be able to.

The thing is, the people Wikipedia successfully did drive out are actual experts -- or rather they never came. The no credentials are accepted policy makes sure the experts stay away in droves. Imagine someone putting in decades of work to gain expertise in a field being told they need to argue with a neckbeard with too much time on their hands. No thanks.