No man....
The carriers(airlines/everyone who flies) all have radar altimeters. They are expensive$$$$$$$. With no real alternative that they don't want to have to buy! What they have works and is proven. They don't want to/shouldn't have to do anything.
RA have been around for decades....5G no. See? Why'd the airlines have to take it up the chute?
The 5G and altimeter frequencies are at least 200MHz apart at all times. They don't overlap. Which is why the carriers were allowed to buy the rights to them via government auction. If you can cite specific instances in which interference was actually demonstrated I'm totally open to it.