I'm very happy to have had (plenty of) spin training. Maybe it's true that a fully developed spin on turn-to-final is going to kill you no matter what, but if you've got some spin experience then you will catch it long before it gets that far. If not, maybe you don't realise what's happening and don't have the instinct to kick opposite rudder, and you're a lawn dart before you even realise what has happened.
(The Pitts will do a one-turn spin and full recovery in less than 500' so at least in theory you could recover from a turn-to-final spin, though for some reason I've never tried it).
I don't think it should be part of the PPL, but I do think it should be considered more-or-less mandatory somewhere around 200 hours when a pilot has reached a certain comfort level with the normal handling of the plane.
(I'm pretty sure my aerobatics training saved my life when I hit a violent rotor system flying over mountains. MAYBE I'd have recovered without it, but I'm not at all sure).
n5296s