This is an extremely insightful sentence. She didn't just back the gay community, she went over the top and made it almost synonymous with her as a brand. It made it too easy to undermine one by ridiculing the other by those who would do such.
I don't know. She created a song that she promoted as an LGBT anthem of sorts. Whether she realized there was a market for one and created the song to profit from it, or created the song as a natural product of her artistry isn't easily discerned.
But she's a very, very shrewd businessperson, and it would surprise me if her artistic output isn't as carefully calculated and intentional as her outfits and marketing.
It would be hard to make the case that what she's done has been detrimental to the LGBT rights movement, though. One could question whether she turned activists into fans, or fans into activists, but even though she obviously profited from it the overall effect has been positive for activists.