His writing is, from the purely literary standpoint (whatever that may mean), exceptional. But that's not my point. What makes one feel "enclosed" is the brutal honesty with which he writes. This, in fact, is what prevents our categorizing him as a gay writer.
Edmund White's City Boy: My Life in New York During the 1960's and 70's reveals an unabashedly ambitious artist coming to terms with free love and gay liberation. It could be called Gay Sex in the City.