When they flung some banner about soliciting more female contributors in my face which reeked of Americana it was the last straw.
I've seen some articles at least add “English-language criticism" by now instead of simply “criticism” when talking about the critical reception of work that wasn't even in the English language so that's a start, but too often still that doesn't happen. It's obviously unavoidable that English-language Wikipedia incurs some Anglocentric bias, but there is almost no effort to fix it and not even a template seemingly to warn that an article might carry an Anglocentric bias, even those that report on matters that mostly pertain outside of the Anglosphære.