I’ll bite. This sort of ultra-shallow analysis fails to explain why the sexism of software developers today is apparently harder to overcome than the sexism of medical doctors and lawyers was decades ago. Somehow women managed to break into those fields, so that in the present day almost 40% of doctors and lawyers (and more than half of medical and law students) are women. I don’t see a consensus on what fraction of software developers are women (presumably because there’s no official license to be a software developer) but the numbers appear to range from 10% to 20%. That’s what the fraction of women lawyers was in the late 80’s, and I think it’s going to be hard to claim that today’s software developers are better at excluding women than 80’s lawyers were.
I believe that the claims about sexist treatment are real - even if software developers were much less sexist than average, one woman in a group with nine men would experience more sexism than she would in a less unbalanced environment. I don’t believe that sexism is what keeps most women out of software development; if it could do that, it would have kept them out of medicine and law too.