Not like that. A pull request that replaced "he" in documentation with "they" was closed with the comment "This project is not the place to advocate your personal politics".
I definitely do not think he was leading by example here. Making assumptions aabout why people do PRs and denying them based on those is a good way to create a toxic community.
Huh? Nothing in a software project will ever be perfect – code or docs — so this doesn't seem like a reasonable expectation. It's always a process of gradual improvement, and that can be true for a change like this too.