Fair enough, not everyone on the right is racist.
One could say it depends on why Chester Nimitz is the only naval admiral to have a CVN named after him. I'm perfectly okay with the convention for CVNs being "U.S. Presidents and famous battles," although the latter now seems to be limited to battles for which previous aircraft carriers were named. As a Star Trek fan I'm perfectly okay with USS Enterprise. We haven't named carriers after members of Congress since the 1960s, so that's probably a dead end.
Was Nimitz a CVN namesake because he was an admiral or because he was a naval hero? Since he's the only example, I don't think there's an objectively right answer to that question. It's probably both. But if we're going to name capital ships after naval heroes, then Dory Miller is as good a choice as any. I'll underscore your "perfectly fine" comment as at least some degree of agreement with me on that; you clearly don't personally have a problem with it. Miller was awarded the Navy Cross, the highest decoration you can receive as a sailor (surpassed only by the all-branch Medal of Honor) and one medal higher than Nimitz's highest decoration—and it was Nimitz himself who decorated Miller. Obviously Miller and Nimitz had vastly different wartime experiences. But if we can name a CVN after Carl Vinson, who wasn't a President and had no connection with the Navy, then we can certainly name one for an undisputed naval hero even if he was of humble rank.
The point of friction is that this isn't the only case of people in the Trump regime wanting to reverse "woke" ship names. It's incredibly rare to rename a ship. And doing so for such a petty reason as undoing alleged DEI is especially galling. Sec. Hegseth says he is doing it to emphasize the "warrior culture" and choosing new names from military history. However the names he's doing away with all happen to be people from minorities the current regime disfavors.
So it's perfectly reasonable to question whether the delay that might be imposed on the USS Doris Miller's entry into active service might have more to do with minority membership and less to do with "warrior culture." It's hard for me to imagine how someone who drags his wounded captain to safety and then mans a gun in the absence of qualified gunners to defend his ship under heavy fire doesn't fully exemplify "warrior culture." I realize I'm being a bit melodramatic. We don't know if that's the "real" reason for removing EMALS. But I detect a whiff of foulness afoot in the Navy, and as someone who holds tremendous respect for the U.S. Navy and its members, I'm a little concerned.