...and when you "fix" it, someone else inevitably changes it back again, then if you persist it's considered an "edit war", and the page gets locked in its original state for months while some random committee decides what to do. Does anyone remember when Chelsea Manning came out and Wikipedia was pretty much the last substantial media outlet to continue using her deadname and old pronouns while a massive fight played out across numerous discussion pages?
Tbh the blatant propaganda on Wikipedia doesn't annoy me as much as the stupid misinformation you find everywhere. Like someone will add some factoid they misremembered, or they'll get confused and add something about a completely unrelated topic with a similar name, or someone will accidentally break the formatting or add some text that doesn't make sense, and often it goes unnoticed for years even while dozens of other people edit around it. Or someone will add some clearly incorrect information from a questionable source and then it has to stay up because nobody can find a better source that specifically refutes it. You'd think they would have found a way to iron out some of these basic problems by now.
Pffft, real mathematicians use Wolfram MathWorld. Explanations and context are for babies.