its mathematics:
suppressor / gun = muffler / car
it makes the gun more quiet, just like a muffler does on a car
you can run any car without a muffler, it'll just be louder.
every car has a muffler off the assembly line.
on city streets, muffler on a car is a welcome piece of equipment bc it makes it more quiet, everyone can appreciate that.
suppressor does not make the gun any more deadly, or any more unsafe, only more quiet.
I don't see any logical arguement that makes the suppressor into something bad for society, it can only make it better for society bc it cuts down on noise.