Of course teaching spins is still alllowed. I received spin training
during my private (3 spins). Spin training is required for CFI rating
(which I also have).

I think another consideration is that a lot of training aircraft are
not certified for spins.

But the bottom line was, after they discontinued the spin training,
fatalities from spin training went down. You've had some fatalities
from spin training up there in Canada. At any rate, we now have two
programs, otherwise fairly similar, one with spin training, one
without. Should be able to obtain fairly accurate information on which
program is producing fewer accidents.