Well the issue of hearing protection is very important. Imagine if each car in the USA did not have a muffler.
Then each person in the USA would understand the use of a suppressor on a firearm.
We are spoiled in the sense of having mufflers on our cars. We take them for granted.
To prove this point people had required a race track in Hales corners in Wisconsin to have each race car have a muffler.
The race track was built way before the properties around it were purchased and built on.
Even after the mufflers were on the cars; they complained so much that they had the track shut down.
Now take that approach to firearms for a noise issue and apply it. People would we requiring suppressor on a firearm. Thus the manufacture cost would go down it would be economical to sell them at a lower price. Hollywood has made them this mystical item. Mythbuster’s has proven that they are not that “Magic” item the Hollywood move’s portrays them as. They make it a point that the dB levels are safer with a suppressor than not.
European’s are a very concerned with hearing issues more than we are.
It would be a lot simpler and cheaper if they would just treat them as firearms and not class 3. In Europe you can buy the over the counter and they are pushed by the governments.