You're not getting it, they already do. He's saying that there may be centrists or conservative people with Google level engineering skills that have no issue

You're not getting it, they already do. He's saying that there may be centrists or conservative people with Google level engineering skills that have no issue with things like ICE or military contracts. I'd imagine such characters would not be popular inside the company, and best shut up. Hence, you could argue the culture already pre-selects for progressive ideology. The "women in tech" memo is a perfect example of it. Sure enough, it was clumsy and likely full of inaccuracies. But the core thesis is hardly harmful or controversial. It was saying that women have less "tendency" to be interested in hardcore tech, therefore aggressively enforcing quotas on this representation is something you could at the very least debate. The memo doesn't even classify as specifically right-wing. It's just a counter point against how to achieve diversity and how far to take that goal, and which method to use. The consequence is that he's fired on the spot. So that proves the point. Centrists and conservatives, or anybody challenging the most progressive views can work at Google yet best shut up. Ideological selection is already in place.