Controversial, but I largely disagree. I don’t think I’ve ever read the wiki page on something I’m an expert on and found any inaccuracies that weren’t due to advances in the last couple of years.
I am only asking because I understand that most of the higher mathematics pages on Wikipedia are written by actual mathematicians – and pretty much unreadable to anyone who is not a mathematician and already fully conversant with the topics concerned.
Maths inasmuch as WP can cover it surely didn't make heaps advances in the last decades, except perhaps in the pedagogy department (that I can source, but it is literally decades) and category theory to give the whole thing structure (also pretty much cut and dried as soon as Bourbaki, I believe, though reception may take a while).