From where I'm standing (I hold a Ph.D in a scientific field, and my spouse is a tenure-track academic), an unsustainable portion of academic work consists in justifying one's research program, on grounds that have little to do with the subject of study.
It should hopefully be obvious that I'm not trying to stir a DEI flame war. Rather, I can't shake the feeling that DEI activism isn't accomplishing much beyond creating bureaucraty, and that this benefits neither research in general, nor marginalized groups trying to establish themselves in academia.
Anyway, this seems like a specific instance of a larger trend you're pointing to. Possibly not even the largest or most absurd one.