You completely and utterly misrepresented what he was saying in this post which makes me question whether you read it in the first place.

Let me roughly refute your points (I don't have time to go more in depth right now, sorry):

1. He never said a hacker ethos is required.

2. He's saying he believes that development of a hacker ethos takes significant time and that may explain why there are few women at the time of his statement who seem to have it. Point being that cultivating it en masse is generational.

3. He never makes this claim, you seem to be extrapolating it heavily.

4. This point is accurate but you stripped the context.

5. He's saying the skewed funnel doesn't allow for YC to have a higher ratio of women. Phrasing matters, and I think yours is inaccurate. You also injected the phrase "main reason" which he never claims.