A company is not a place to air out your public opinion internally and expect no consequences. This is not the National Monument. This is not your open Mike night in your comedy club. This is not where you scream and run and then cry first amendment first amendment.
This is a place of work. Actual women work with this dude. Imagine how they would feel. Imagine the potential number of people he interviewed that were women or minorities.
Nobody's telling this sad dude what to do outside of work. He could very well go and participate in all far right movements as he pleases.
But to espouse a stupid thing as 'women are less capable' and expect NOT to be fired seems like he was playing with fire by first setting things on fire.
And let's not get started on 'did you ACTUALLY read his memo? He didn't say that on page 4 line 43' like this is some Tolstoy level philosophical meta writing. This is mediocre crap written by a dude looking for a reason to get offended and throw shit around - someone who I think probably landed on the wrong side of Reddit or 4chan often times.
Sorry. The most serious crime I think is his ingenious creativity that made the CEO and many well-respected people to actually read his crap. If I only had that talent, I would become a professional performance artist and quit software engineering.