He is japanese and I met him in the european lisp symposium. He doesn't speak english at all and he mostly uses automatic translation, any english weird thing or strange sentence can be probably attributed to that. He was very nice
Re: terrible maintainers, I'm reminded of "Fox" who maintains (maintained?) TTRSS (Tiny Tiny RSS) dude is atrocious. Makes Linus and jwz and Theo De Raadt look like saints.