intersectionality - the complex, cumulative way in which the effects of multiple forms of discrimination (such as racism, sexism, and classism) combine, overlap, or intersect especially in the experiences of marginalized individuals or groups
white queer people are still oppressed because they're queer, but dont have to face discrimination because of race. there are tons of factors, like the definition explains, that may influence how oppressed someone is. white people certainly like to insert themselves into conversations that they are not the center of, and white lgbtq+ are no exception to this rule. this is coming from white nonbinary lesbian.
tl;dr: queer people are marginalized period, but based on other factors like race, class, and gender, that might add onto someone's experiences with prejudice and discrimination.
as for the brief discussion about not having to come out, i dont think coming out should be a thing, like i wish it wasn't. coming out is more for straight people, to just let them know "hey, im not straight/cisgender!" i hope in the future coming out goes out of fashion, and labels don't exist either, everyone just exists and respects other people.