One note is that when I checked Wikipedia’s list of “Wikis”, I noticed in its history there was an attempt to add the ProleWiki and AnarWiki, by the same user, who also tried removing the fascist’s “wiki”. Unfortunately, that got reverted.

Yeah because there are other reasons to not donate. The donations do not go to wikipedia but to lots of projects of the foundation that you might or might not support. They are also getting way too much money in donations, like an unsustainably large amount. Also they just keep lying in their calls for donations. This is a very controversial topic actually. Lots of community threads about it.