Political correctness is a dangerous tightrope.

You try to uncover X'ism in tech by pointing out ways in which common industry practice Y disadvantage people in group X. But to do this, you had to claim that people in group X would perform worse when practice Y was in effect. Oops! You're an X'ist yourself!

E.g. X = age, Y = working to deadlines/long hours, X = women, Y = speaking up in meetings, etc.