He was a co-writer for VII, and while I like that game it was a bit of a mess by the end of the first disc. Aside from that, he was one scenario writer out of many on several games at Squenix, most of them (compilation of FFVII, FFVIII, X-2, etc.) being absolutely awful. Even X which is one of the better games he worked on all over the place.
I have absolutely no reason to trust the mans ability to write anything.