Yes, if you're a closeted gay man then you'll be harder to pick out from a crowd than a black man. That's a literal fact and I can't deny it.
However that will never remove the highly-real and highly-personal oppression that all gay men regardless of colour and 'closet status' face. It is not something that gay people can just escape from and you have no right to ever say otherwise because you have not had those experiences.
But lets put it clear. You're not just arguing that the oppression different groups face is 'different', you're defending someone who literally said that the closet is a place for "gays to advance their resumes and careers." You're actively defending someone's right to downplay gay oppression, and considering there are plenty of actually-good arguments to use against Buttigeig it's misguided at the very best.
I'm not going to quote the rest because if you seriously think that the white queer community is "accepted," then I can't take your argument seriously.
No, the white queer community is not 'accepted' and you have no right to dictate to them how 'accepted' they should feel.
AS is the operative term, its a long struggle but so far white LGBTQ have done a shitty job of intersectionality by and large. I leave this Billy Porter quote here:
I think there's a little bit of that — no, let me just say it — there's a lot of that in the gay culture, especially the cisgender, white, rich gay culture. I sat on the board of the Empire State Pride Agenda for six years, and that's an organization that really was influential in lobbying and fighting for gay rights, during the AIDS crisis all the way up through marriage equality. When these white, cisgender, rich boys got marriage equality and the organization's focus turned to transgender rights, those motherfuckers closed their checkbooks, and the organization of 25 years had to close. We need take all that energy and focus, and shift it on to those who are less than us. That's how it works. Internal vigilance is the price of liberty.
It is almost a respectability thing. In order for white, cisgender guys to get married, they distance themselves from the rest of the queer community.
It's no tea, no shade. We learn. When we know better, we do better. Now y'all know better, let's see what happens.