The overhang on a 22 fret neck helps to hide the neck-to-scratchplate join line if it isn't perfect, plus you get that extra fret which you may use. On the downside, if you ever need to take the scratchplate off to change the pickups or work on the pots or switch, then you have to take the neck off to do so (or at least loosen the four neck screws to a significant extent).
Last edited by Simon Barden; 29-12-2021 at 04:56 PM.