” NY refuses to say how many have been registered... “
I only know one person who even so much as indicated he would register. And I suspect he didn’t after all.
I know of quite a few who have simply ignored the stupid NY “S.A.F.E.” act.
The only real impact to those who ignore it (other than they are now criminals) is that ammunition is much more difficult to obtain.
(Best bet is for them to go out of state and buy it.)