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Which one?

Few people can acknowledge or even realize that there are hundreds of Wikipedias. Mostly language-based, but some are language-neutral.

But they all boast their own unique communities and unique internal rules. Never judge WMF based on enwiki alone!

Sure, but it's pretty clear that the topic of this English language article is the English language Wikipedia

Which is also the biggest. By far. So big in fact that you very much can judge WMF based on it alone.