As long as we have politicians, and entities trying to brown-nose said politicians, it's likely we'll have to put up with airports being renamed. [🙁]
However, the airport code would not change. To wit, Fresno's still FAT and Sioux City still SUX. New Orleans can be MSY at times (I know, I need to buy a vowel) and I can't figure out why MCO, while keeping its code, hasn't been renamed the Cryogenics International Airport (think waaaaay before Teddy Ballgame on this one).
And besides, hardly anyone calls these places by their "renames"--the politicos certainly, and the media, but usually only in first reference. The folks that work there and most of the public don't. DCA is still National Airport.
And do you know anyone who says "I'm heading over to the Norman Y. Mineta San Jose International Airport to catch a flight"? When and how did that one get changed? Must have been slipped in under the radar. Then there's Freddie Pena's--oops, that's only the access road and not the airport...so far.
Now there is one renaming proposal that I just might go along with, that being LIT becoming the "Bill Clinton International Airport And Massage Parlor." [:bigsmile:]