I think point number 2 is the most interesting. Dude doesn't get that being an engineer is about more than just "machine skills over people skills". Specifically he doesn't get it because he's a junior developer who hasn't reached that stage in his career yet.

But... that's not incompatible with homeboy's original manifesto. He argues that women don't get into engineering because their "people skills" get in the way. Zunger agrees that junior developers don't use or need those people skills. And while senior engineers might need those skills, senior engineers also need to prove themselves as junior engineers first. So, if fewer women have the skills it takes to be junior engineers, that significantly decreases the number who will eventually become senior engineers, right?

But, all that said, maybe we need a different kind of job opening for a different kind of junior developer, if we're erroneously weeding out the people who will be excellent later in life. I don't know for sure what that job looks like, but the way the guy in this manifesto describes the culture at Google, it sounds like what they're doing is starting women off in those junior roles that (at least some of them) aren't well-suited for?