That poor Watchmen got delayed again thread got so rerailed by this discussion, I figured it deserved its own thread.
Anywho, I totally understand why some fans don't want older characters retroactively made gay by modern creators. When George Takei was against revealing that the NuTrek Sulu was gay, I got it. The character Takei played for decades was not a gay man, nor was he ever intended to be.
However, the NuTrek Sulu is explicitly not the same Sulu that appeared in the original Star Trek show, cartoon and movies. This is a new continuity set in an alternate reality. Yes, they handwaved it away for the mainstream audiences with time shenanigans, but none of that holds up to any degree of scrutiny, otherwise Khan would still be a Latino actor pretending to be Indian, rather than a pasty white Brit NuTrek is not classic Trek altered by old Spock travelling back in time, it was always old Spock travelling back in time to a parallel universe and changing it. It's the same deal with Discovery, which is no more a prequel to the original series than the Abrams-verse. They are each different continuities distinct from the original for legal reasons.
The same goes for the DCU, which has been destroyed and recreated into new and often very different versions at least FIVE times by now. Even Roy Thomas was playing with new versions of those Golden Age characters, since Earth-2 was not an exact copy of the stories published during the Golden Age. Those old stories didn't have any kind of consistent continuity, so Thomas would have had to make changes here and there in order to make everything fit together. The Superman of Earth-2 is based on the Golden Age Superman, but he is definitively not that character.
Long-running characters are tweaked and updated all the time to keep them relevant to new audiences. I understand that older fans want everything to be exactly the way it was when they first started reading, but that fails to understand that these characters have never been static. They have always been changing and evolving, often in ways their original creators never intended. Superman is a prime example. Would we even be reading about him today if he was the exact same circus strongman leaping around out-bullying other bullies? Probably not.
Now, characters can certain be changed so much from what readers liked about them that they lose their audience, as DC discovered during the New 52 and its diminishing returns. The opposite can also be true. If a character never changes or evolves, they are forgotten. Roy Thomas's All-Star Squadron did that for the Golden Age characters in a very additive way, which I think is generally the best way to go about it, but since the DCU is several continuity revamps away from that particular continuity, I don't have any problem with revealing new information about the sexual orientations of some characters if it makes for interesting stories and brings in new readers.
Setting aside sexy ladies man Firebrand for the moment, Alan Scott's main attraction to readers has never been his raging heterosexuality. It's always been his cool powers and heroism. Was he ever intended to be a gay or bi character by Bill Finger or Mart Nodel? Of course not. Nor do I think any of the previous depictions of Alan Scott prior to the disastrous New 52 phase were meant to be in the closet. However, the idea is now out there and I think the character could potentially benefit from this reveal.
Yes, that is not what Alan Scott originally was in the old comics, and that's perfectly fine. If it makes you feel any better, a wizard did it. A wizard made Alan Scott gay. Or the Anti-Monitor or the Time Trapper or Parallax or Dr. Manhattan. Black Canary wasn't a founder of the JLA either, until she was, and then wasn't again, but Cyborg was. Batman's parents were killed by Joe Chill, until they weren't, and then were again. Amazons were really into BDSM, until they weren't. Superman used to be able to use his super-muscles to change his entire face, until he couldn't. Alan Scott wasn't gay, now he is.
If that bothers you, if the idea of Alan Scott kissing a dude in new comics shatters your worldview, you can always ignore them as I do any comic written by Scott Lobdel or Chuck Austen You can even go on reading about Alan Scott without acknowledging he's gay if you really want. And, if the stories suck, we can all ignore them in the same way we ignore Northstar.