The people who are accusing sexism are causing more damage to tech, and the political correct censorship will likely causing bottled-up emotions which will stir up sexists biases.

Regarding your #3 point, that is key. Sexism definitely exists in other areas. But your wife was a qualified helicopter pilot. The most vocal accusers or sexism in tech more often than not have scant to no qualifications or flimsy to no proof of sexism.