I like the way you identify what is missing. It isn't that Superman is an "immigrant" that is the problem, but that the message of the tale just came off broken and somehow off. Of course Superman's outsider status is an important part of his character! No one, MAGA or otherwise, objects to that. What most do object to is the trivializing of his lineage and his masculinity. Those elements were trashed. Gunn is like a person trying to retell a joke he has heard, but he just doesn't remember the setup well enough, so he bungles the punchline. He doesn't understand Superman!!
I like the way you identify what is missing. It isn't that Superman is an "immigrant" that is the problem, but that the message of the tale just came off broken and somehow off. Of course Superman's outsider status is an important part of his character! No one, MAGA or otherwise, objects to that. What most do object to is the trivializing of his lineage and his masculinity. Those elements were trashed. Gunn is like a person trying to retell a joke he has heard, but he just doesn't remember the setup well enough, so he bungles the punchline. He doesn't understand Superman!!