Ditto that commitment to lower DB's in the aviation arena in Europe, which some may or may not consider a bureaucratic negative.
All production aircraft and it may apply to homebuilts, have to meet a DB requirement.
Many US aircraft shipped to certain countries are retrofitted with "Swiss Mufflers" ( Google it).
They question begs, will the ATF etc change their stance via research on hearing loss, tinitus etc within the shooting sports arena?
It is a bit of a stretch to expect common sense from government bureaucrats.