You’re making the erroneous assumption that ‘the system’ would actually work to disarm the nutjobs.
Not at all.
The ‘system’, as designed, would ensure the left could disarm anyone they want at any time they choose.
Ask the Venezuelans (and cubans, and mainland chinese and ...) how many lives have been lost vs a few nutjob shooters...
Most shrinkydinks think even wanting to own a gun is a sign of mental illness...
Then change it! Good God, this is America. Get active and make sure people are protected. I would prefer we had mental institutions to take care of these nut jobs but the same problems would apply to that.