It's pretty obvious in HP&TDH novel that Dumbledore was gay as a teenager.TCTTS said:
I'm of two minds on this. Just like any underserved demographic, there are plenty of LBGTQ people who want to see more people like them represented in film and television, and studios trying to accommodate those demographics is fine by me. It's no different than trying to round out a cast with more minorities, etc. Can it be seen as pandering more often than not? Sure. But Hollywood's job, first and foremost, is to make money. And getting more and more diverse crowds in the theater is what makes money. Simple as that.
What they're doing with Lando and, say, Dumbledore from Harry Potter is ridiculous, though. Either show the character being gay - in-movie - or don't. This after-the-fact, "Uh, yeah, guess what? So-and-so was actually gay the whole time!" schtick is such bullsh*t. Either commit or don't.