Isn’t the phrase ”openly gay” old hat?

The term or phrase ”openly gay” isn’t that old hat, obsolete? Given that the government supports and recognizes gays and same-sex couples (even to the point of blocking popular votes not in favor of it), why would there still be ”closet gays”? Gays should be living gay open and notoriously. If you get in a fight with a gay and happen to be winning and say a gender slur because you are mad not because of the sexual orientation of the person, you can still be slapped with a hate crime. What reason should there be for any gay not to be gay loud and proud?