As he says, because they do get screwed in all the other sectors. They do happen to be in the "privileged majority" only in tech, so there they see redressing as a negative, but only there (or rather, here).

The ideal answer is not to completely drop any diversity effort, but on one side (the "revolutionaries") to recognise where they turn into zealotry, and on the other ("the entrenched", of any type) to accept they might have to lose something to gain something.