The Allegorical X-Men
The last line in that quote is perhaps the most important and thus far overlooked. The mutants are not a stand in for Black persecution, or LGBTQ Persecution, or Jewish they are representative of any persecuted outsider group. Some stories are more overt in their inspiration, but they have never been a stand in for them. Mutants in the MU are not telling stories about black persecution, but they do tell stories that are
like that persecution.
Now some people will make the argument that mutants don't have a culture, that is wrong on multiple levels. There has been explicitly within the MU a culture of persecution and shared suffering that permeates mutants in the MU. Its baked into the very identity of the books and characters and a core component in multiple runs, Claremont's, Morrison's and Hickman's most notably. Some people don't get that, some people don't like it and you know what that's fair. The X-Men have told great stories that leaned heavily into the metaphor and allegory, its also told great stories that had nothing to do with it. A person may not like it or agree with it, but to a large extent that is irrelevant. I don't like or agree with the Gungans in Star Wars but that doesnt mean I can pretend they don't have an impact on the story. Furthermore, that association with outsiders and minorities are historically one of the major attractions for the mutant books. Many of its fans, are fans
because of the metaphor,
because they can see themselves in them. Who is Remender (or you) to question that?
This is where the problem begins, the core concept of this book was explicitly built on the idea of the mutant identity and mutant specific problems. Next you have Wanda, herself a much debated topic showing up and Remender has her making tone deaf statements. "Why is it so important for mutants to be born?"
The problem with Havok's speech is that he wants to say "my minority identity doesn't define me". That's great, the thing is however, it's not what he actually says
Havoc's statement only works if you can reject the association between Mutants and minority groups and outsiders. This position is intellectually untenable, it is possible to dislike the way it's presented but to deny its presence is disingenuous.
The issue further blew up because when his position was challenged Remender doubled down on it, in the books and on twitter, telling people who disagreed with him to drown in Hobo Piss and to Kiss Havok's shiny red dick.
The central issue that came with Remender's Uncanny Avengers was that he wanted to tell a message of inclusion but bungled it. He's not saying that Havoc's not just a mutant, but that "mutant" is not among the things he wants to admit to being. This is cultural erasure, Remender is weakening the conception of mutants as a group by arguing integration to the point of invisibility.