It is, simply, human. Oscar Wilde was a homosexual. But his plays weren't about homosexuality. It wasn't informed by his homosexuality, but by his intelligence and his wit. That's why college and community theater groups still mount the play.
History is history.
And I would like to think that, in our college classrooms, we're giving students a history that is whole. Teaching a special course on gay history, especially at the college undergraduate level, tends to present a partial view. Up to now, most universities have wanted to stay away from special pleading. No such thing as Catholic literature. Much less Catholic science.