This criticism seems to mostly be that he is associated with bad people who say naughty things. Maybe he is a bad scientist, but where are all the well designed scientific studies that show his conclusions are wrong? That's what I care about, but they don't exist because you would never get funding and even to propose running such a study would be career suicide.

Interesting comparing these two entries:

https://grokipedia.com/page/OpenPsych

https://en.wikipedia.org/wiki/OpenPsych

the entire microuniverse of some rationalist/pseudoscience groups feeling really "rational" and then having racist, sexist, (insert -ist or -ism here) views is a bit of a joke at this point