Putting Milwaukee in the airport name emphasizes where it is but I don’t think anyone was confused about the Milwaukee airport’s location. The idea that this rebranding is going to “help[..] more people recognize MKE as an option” when they want to fly to Milwaukee seems to me patently absurd.
Meanwhile the irony of an airport named for General Mitchell – who had his title of General stripped by the military — having his title stripped from the airport that honors him is a bit too much.