For what it's worth, Charity Navigator gives them 4 out of 4 stars with a 98.33/100 rating: https://www.charitynavigator.org/ein/200049703
Meanwhile eg the American Cancer Society gets 73/100 and spends more on fundraising than WMF's entire budget, so oncologists can snort blow off hookers in Vegas, but nobody cares.
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.
What was this ad that was so objectionable?
That they apparently think gender defines perspectives more than ethnicity and cultural background is the problem. Apparently they can make an effort towards gender but not toward the issue that plagues English-Language Wikipedia that only English-language sources are used in the end, often even about subjects that are fundamentally not in English such as the critical response of non-English media, being phrased as though it's a global consensus.
Again, I've seen some places where his has recently improved, but it's annoying to, say, see on Wikipedia that for instance “criticism was mixed” on a French film that was overwhelmingly positively received in France because English-language criticism was more negative due to cultural differences.
That they decided to highlight the gender problem first doesn't mean that Wikipedia thinks the other problems are ok as is.
Someone having different priorities for fixing problems is not necessarily your enemy.