I don't know him (only ever saw him speak once at a Wordpress conference 10 years ago or so, where he was a caricature of himself), and I can easily believe he is hard to work with. That said, I believe he was diagnosed as having Asperger's syndrome, which could explain his many personality quirks, and that makes the mention of "neurodiversity" as one of the many aspects of diversity they claim to protect rather disingenuous.

"The GCC Steering Committee is committed to providing a friendly, safe and welcoming environment for all, regardless of gender identity and expression, sexual orientation, disabilities, neurodiversity, physical appearance, body size, ethnicity, nationality, race, age, religion, or similar personal characteristics."