Except it's totally not, being straight in most places in the world is the default and everyone is seen through a lens of being straight. Coming out refers to revealing to people that you are not straight.
Fine, I'll yield the semantic argument. "Coming out" in the context of sexuality typically refers to homosexuals publicly expressing their preference for the first time and adjusting their public identity to match.
I was attacking the idea that most aren't judged upon first expressing their sexual desires. It's important anywhere and everywhere. Bringing home a partner of a different color? Size? Class? "Looks"? Judgement is issued. In some cultures the kind of partner you're able to pull speaks directly to the honor or worth of the family. It's never not a big deal.
People are judged for their relationships in general.
People are judged for who they have sex with based on all sorts of physical characteristics (sex, skin tone, size, looks, etc.) as well as social attributes (economics, religion, behavioral awkwardness).
People are also judged for not having sex with certain people (being monogamous, or especially being a virgin over age 30). Or for people they hang out with in non-sexual relationships in general (friends from different race, class, religion, or sports fandom).
Relationships of all sorts are important anywhere and everywhere and never not a big deal.
It may be the expectation but the reality is that it may not be true. Until you take an action to express your sexuality, everyone is just expecting you to be like them. Bringing home the boyfriend/girlfriend is implicitly declaring your heterosexuality, telling your family you are gay is explicitly declaring you are gay. You could also implicitly declare it by bringing home a same-sex partner. Coming out is simply expressing your sexuality.
> Bringing home the boyfriend/girlfriend is implicitly declaring your heterosexuality, telling your family you are gay is explicitly declaring you are gay.
Well, if most people you know implicitly assume you are straight, bringing home the expected kind of partner doesn't declare anything because it was already assumed that you were straight.
> Coming out is simply expressing your sexuality.
No, coming out has its roots in being gay and explicitly revealing that information to others. The entire history of the concept and phrase of coming out exists in that context, you can't just re-contextualize it without throwing away the experiences of people who have come out in the past.
Saying that this is "coming out" doesn't make it true.