Why should one care if it is a lesbian or gay, as opposed to a straight man or woman who prefers coffee to tea, who writes a great work? In regards to how music qua music is to be evaluated it shouldn't, and doesn't, matter in the least.
Toru Takemitsu never wrote an ugly sound in his life. Animated throughout his career by nature, many of his works carry titles relating to water or trees. This is so of two of his most beautiful works, Water Ways and Rainspell.