...I can attest to the fact that sexism against women is almost 100% B$.
Men have been my champions, mentors, and supporters - not to mention friends. I've gotten - on the mere request - a recommendation YEARS after we last were in touch.
And, I married a man in Tech. There is a saying in STEM - even <s>UGLY</s> not pretty female engineers can find a husband - they are that rare. The ones on the job are treated like Queens - VERY respectfully. And, engineers make GREAT husbands (well, except for that annoying thing about always having to FIX everything).
Oh, sure there is the random woman who is sexually harassed by the boss, but, what you find out is that she is NOT a coder, but in PR, or HR, or some such.
A boss would NEVER give a gifted coder a reason to leave.
This article is spot-on.