This is just a tired old emotional argument. It won't phase anyone who sees the results of modern immigration practices.
we tried being nice, reaching across the aisle, etc. and that got us Orange Man 2.0
If you don't like "sneering oversimplification" you're really not gonna like it when you find out what smug "I'm the adult in the room" rhetoric does to both how you're perceived by interlocutors and the limitations on your own ability to work out the logic of these situations.