Does this theory need the additional hypothesis that real life negative feedback is higher for women privately doing things with their computers?
What experiment/measurement (if any) could invalidate this theory?
But probably some of your downvotes are coming because you're discounting how much louder and more open sexism tends to be online than in the office.
This seems implausible. In most technical circles (see, e.g., HN) there is reflexive political correctness and mobbing against anyone who dares question the party line. Witness the comments on this article as a perfect example. We literally have the president of ycombinator making a personal attack against someone who dares to ask why a set of anecdotes is interesting.
(Note that I've never seen sama or anyone else attack someone for "why would I use your lib over sqlite?")