If you compare it to their presence in the overall population, is their relative on screen presence dropping to meet it, or dropping below it?
Certainly, its a good thing to have an industry wide push to make those groups feel more accepted, but I also didnt expect it to last forever. I expect it will stabilise somewhere a bit lower than the last 10-15 years rather than trail away to nothingness. Unless we go full fascist, God forbid.