Whether I agree with you or not here's the difference. Stricter enforcement of who gets a firearm is not the same thing as putting a vulnerability into every firearm that allows police officers to cause the weapon to backfire into the legally purchased firearm owner's face. Breaking crypto literally makes it dangerous to the people who use it. I'd be opposed to remote police controls on firearms that caused them to fail as well. It's an unnecessary danger that circumvents the purpose of the device.