From my personal experience, I just don't follow the "maintains presssure better".The tires do maintain pressures much better and the tire pressure sensor was not on even on the coldest mornings.
Except for the 35+ year old pickup I had with rusty rims, I don't remember ever having a vehicle where I had to adjust the air more than twice a year.
OK, well maybe that VW bus I had but almost everything on it had to be "adjusted" daily !!
While there might be some TINY advantages, the biggest one is allowing the dealers to take more $$$ out of your wallet !!