Okay, putting on my comic book nerd glasses on (bit of tape in the middle holding them together).
As has been mentioned, this isn't Clark Kent/Kal El Superman, this is his son Jonathan Kent, whose been around for around five or six years and has been Superboy for most of them. He's not the first gay/bi superhero, and he won't be the last. It's nothing new, it's hardly bandwagon jumping as I've seen banded around and the fuss will probably die down whenever the inevitable happens and Clark redons the cloak.