Affirmative action means women and minorities get preferential treatment during hiring. Given the fact that women and minorities are underrepresented in tech, it should be obvious that they would have an incentive to join the industry because they would have very little trouble getting hired wherever they want. And given the fact that over 60 percent of graduates are women, it's clear that lack of opportunity isn't a factor for women at least.
So you basically have no evidence to back up meaningless, unsubstantiated claims. You don't even support your statement: "affirmative action means women and minorities get preferential treatment during hiring." Guess the discussion is over since you refuse to provide any evidence to back up your ridiculous claims.
It's really easy to plug your ears and scream that an opponent's argument is "ridiculous" (what you are doing). It's more difficult to actually make a counterargument yourself (what you are not doing). Try harder, maybe.