Not arguing with your per-say but a counter point.
If somebody broke into your house and you wanted a weapon to defend yourself, what would you reach for?
If a person uses a tank to commute to work, it doesn’t make it a vehicle, it’s just a not used weapon that’s re-purposed. Just cause you don’t use a knife or a boxcuter to cut anybody doesn’t make it any less of a weapon. There is a reason those things are banned from Airplanes. Knifes have been a basic weapon since the beginning of time in millions of different shapes and sizes.
If you would ever reach for a firearm to defend yourself, it’s a weapon. Fuck even a car is considered a weapon if you try to run somebody over, especially a cop.