All of which is perfectly compatible with his being incompetent, or wrong about this in particular. (For what it's worth, I don't think he is incompetent.) But what he easily demonstrably isn't is "Windows-first", and I suggest that any mental process that led you to that conclusion needs reexamining.
He cowrote a book about the innards of FreeBSD: https://www.oreilly.com/library/view/design-and-implementati... (ignore the first paragraph of the description, which is presumably a copy-and-paste error).
He has been on the FreeBSD Board of Directors: https://freebsdfoundation.org/blog/george-neville-neil-joins...
He's presented a bunch of papers at FreeBSD conferences: https://papers.freebsd.org/author/george-neville-neil/
All of which is perfectly compatible with his being incompetent, or wrong about this in particular. (For what it's worth, I don't think he is incompetent.) But what he easily demonstrably isn't is "Windows-first", and I suggest that any mental process that led you to that conclusion needs reexamining.