I'll just say the obvious:

Wikipedia admins get it wrong more often than they get it right, and the general process for Wikipedia is obtuse, ignorant, and generally backward, with most of the favor given towards "people with old accounts" as opposed to actual knowledge.

It's beyond simple to get new editors banned for simply creating edits others don't like, no matter what the veracity is.

The only reason it's good for things like science is that it's generally hard for the kind of lowIQ populace their older accounts and admins have to argue about definitive numbers. But I am sure if they could they'd say things like "Hydrogen doesn't actually always have 1 electron", and so on.