What about medicine, genetics and neuroscience? These are the fields investigated by John Ioannidis, whom you've probably heard of [1]. He's the guy that published that paper titled "Why most published research findings are false" [2]. From the abstract of which, I quote:
Simulations show that for most study designs and settings, it is more likely for a research claim to be false than true. Moreover, for many current scientific fields, claimed research findings may often be simply accurate measures of the prevailing bias.
Note that that's pretty much the claim of the hoax- that the hoaxed fields are dominated by bias and the majority of their research claims are absurd (so, false, I guess).
If that's true of medicine and genetics, it's true of most of the hard sciences, and no doubt, also CS and economics. So there is no good reason to single out gender studies or feminist philosophy for this kind of fault, or in any case, the hoaxers would have made a much more meaningful contribution if they had hoaxed a maths or physics journal, rather than the ones they did.
Btw- in maths, a recent HN article discussed the Mochizuki proof of the ABC conjecture, that his fellow maths experts consider to be very badly mistaken (if I got that right) [3].
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[1] https://en.wikipedia.org/wiki/John_Ioannidis#Research_findin...
[2] https://journals.plos.org/plosmedicine/article?id=10.1371/jo...
[3] https://www.quantamagazine.org/titans-of-mathematics-clash-o...