I think it's quite possible.
And while the list might well scare away petty crooks and two bit types, hardcore criminals know that to steal guns you first have to go where the guns are.
Just like car thieves, if you want to steal high dollar cars, then you first have to deal with high dollar security systems. That's part of it and a "professional" criminal won't be deterred.
And now they have a list to aid them.
I hope there is a lawsuit that comes out of this. It's completely unnecessary and unjustified.