Yes turning stalls are different to straight ahead, you can show signs of a turning stall without doing a full blown upside down white knucle recovery. The point I'm getting at is if you can recognise the approach of a stall either straight or turning then spin training is unneccesary, CASA must think the same way, that's why spin training is not required. I do think that aerobatic training including spins helps pilots with their skills but it's not for everyone.
Sscbd, there are times when practicing something that is unlikely to happen is dangerous, 2 engine failures on 1 wing on a 707 over Bass Straight is one example, the investigators said it was like practicing to die, you only have to do it once.