Um, wut? Lil Nas has done such excellent work advocating for the humanity of queer people, especially gay people like him. Young people love his humor, his music, and his fierce advocacy. He's undoubtedly made life better for some people.
I wonder what other artists should be dismissed as Big Business? Novelists who center queer characters? Maybe film directors who explore queer themes? Are they also being exploitative, I wonder, by your acquaintance's definition?
And please tell her for me, a gay man and a very early member of Queer Nation, that nobody ought to be required to wear a label that doesn't feel right for them.