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.
It's a bit of a self-defeating attitude. Hackers love scrappy upstarts. Succeed too hard and you cease to be a scrappy upstart.
Wikipedia's current ads are both misleading and more intrusive than ever.
550 employees is huge, especially for an organization that doesn't even pay those employees to create and edit the content on the site. It's so far away from "on the edge of pauper" that the point you're making—even if true for other, non-Wikimedia realms—is completely irrelevant here.
Bullshit.
To repeat: the ads today are more misleading and more intrusive than ever. In years past there were ads that were unlike the ones used today. (People complained about them, but I was not among them.) Those ads were successful. There's no evidence to argue that they wouldn't be successful today, too.
As I said, hacker ethos of biasing in favor of the scrappy underdog. It was fine to fundraise when they were small and their strategy was unproven, but as they grow and their strategy is demonstrated as effective, they lose our favor.
ETA: speaking of human psychology... It's an election cycle in the US. It's interesting that this story, the facts of which have been known since last year (according to a cursory search of news story dates) is suddenly again making the rounds right now. May be simple coincidence.
You just moved the goalposts. (In this case, moved them such that your "argument" is just restating the substance of the complaint.) Wikimedia is bringing in a lot more money doing this sort of thing. That's well understood—by all, i.e., those on both sides of the issue.
Your job is not to defend the position that the aggressive ads bring in more donations, but that if they weren't using them then "they wouldn't make _any_ money". Please leave dishonest sleights of hand at the door.
A couple of years ago a Wikimedia Foundation fundraising report explained why that "Don't scroll away" phrase was added:
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“Don’t Scroll Away”
A simple, yet effective phrase that we were surprised to see resonate with readers worldwide was simply asking readers not to “scroll away” from or “scroll past” the fundraising message in the banner. We believe that addressing the context in which people donate helps improve the donation rate.
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Quoted from this report: https://meta.wikimedia.org/wiki/Fundraising/2019-20_Report