There isn't a reactionary movement that sees "women in tech" as an existential threat. The "reactionaries" you're alluding to are properly known as "liberals" or "egalitarians".
Gah, I realize that I think I was unclear. I didn’t mean “liberals and egalitarians are reactionaries”, but rather the people who are critical of tech diversity quotas are often motivated by liberal and egalitarian beliefs. Hopefully that’s clearer if not more agreeable.