You’d get exactly the same thing if you bought a Fender Tele or Strat with a 22-fret neck. It means they can use the same body for 21-fret (the original number of frets) and 22-fret necks. If the 22-fret necks had no overhang but were finished the same way as the 21-fret necks, then the overall neck length would be about 1cm longer. They’d then need a neck pocket that was set 1cm further back into the body, squashing up the neck (and middle for a Strat) pickup locations, or the bridge would need to be set 1cm further forwards, squashing up the bridge (and middle) pickup locations. Either way, the pickups end up closer together and you lose some of the classic Strat and Tele sounds, with less bass from the neck pickup. Plus as a manufacturer, you have to make two types of body as well as the two types of neck. Much easier to add the overhang in order to have a 22nd fret.