I could be wrong, but I was under the impression that every death involved a drop-side crib with plastic hardware. Why ban the metal-hardware ones, too?
Now shorter parents are going to have to get on a stool to lay their baby down in a crib or get them back out (yeah, that's safe). People won't be able to lower height of the crib mattress when they should; they won't be able to reach down into it if they do, with the high side in the way.