I really have no problem with people being both subject-matter experts and activists. Chomsky is the prime example: world-class linguist and outspoken leftist intellectual. But the one mistake he never made was to try to established 'leftist linguistics'. Contemporary 'AI ethics' feels like leftist activism with a very superficial understanding of machine learning technologies. Versions of "ML researchers are white males, so their creations inherit their biases"[1] are objectively wrong. Biases exists, but they come from the human-annotated training data fed into ML systems and not the gender of the programmer.
[1] https://www.nytimes.com/2016/06/26/opinion/sunday/artificial...