Todd
They certainly don't have the expertise. Most of them aren't regular
participants on the English Wikipedia, and even those who are often dial back after joining the WMF. The most relevant expertise is participation in the project itself, and familiarity with how things are supposed to be done on it.
This seems to assume that dealing with harassment and community dysfunction on the English Wikipedia is quite different to dealing with any other community that exists in the world today. Well, to misquote Tolstoy, every dysfunctional community is indeed dysfunctional in its own way. But the problems of correcting that dysfunction are pretty similar across a broad range of online community, and English Wikipedia is not special. The notion that it is, and that nobody who is not deeply embedded in its dysfunctional culture can possibly know anything, say anything or do anything about it is simply colossal arrogance and is part of what has led us into the mess we are in today.
It takes no money to evaluate an ANI complaint or file an ArbCom case. So, while the WMF may have money, that's irrelevant.
It takes money to hire people who know what they are doing and to give them time and space to do it. Volunteers plainly do not, and the evidence is before us.
Thrapostibongles