NPOV == Neutral Point of View for those wondering. Wikipedia strives for "just the facts", but as you point out they don't have it everywhere. Most of the articles are very good or at least acknowledge where there is bias that should be resolved.
There is reasons for doing it but when you get into certain fields it just becomes a cluster F.
Wikipedia has to come to terms with the fact that if you claim you're making an encyclopedia that comes with certain expectations, namely, that you've verified the facts you are printing. They try to obfuscate this with endless layers of rules and procedure, but that no more eliminates the need to check facts than credit default swaps eliminated the need to pay back debt.
https://en.wikipedia.org/wiki/Wikipedia:Neutral_point_of_vie...