This is a "new" character.
Hes only Superman because Clark Kent is currently off planet.
The headline just reads better on clickbait sites when they say "Superman now has a boyfriend" or "Superman comes out as bisexual"
And we get alot of new characters who "represent" some stick some dont like with all new characters.
Generally if the character is actually good all the external shit doesnt matter, one of the last things I think about when a character is introduced is their sexuality or race....lets see some cool shit or a good story and im sold.
Cindy Moon is a cool character because Cindy Moon is a cool character NOT because shes representing anything.