Re: FBI can't unlock smartphone
I agree, any number of things could have happened if he hadn't been able to buy a gun, hell, if he were sufficiently motivated he could have probably killed someone with the laptop I'm typing this on, it's fairly old and pretty heavy so I reckon it could do some damage with a good swing.
The problem with your argument is that a gun (with very few exceptions) is an object designed with the primary purpose of killing in mind, my laptop isn't, nor is a car, a bus, truck, train, aeroplane, ship etc.
I'd be willing to make a small donation to the NRA if the number of Americans killed by ramming attacks in the 365 days of 2017 was larger than the number of Americans killed with a gun this week.
America, where the difficult problems are caused by somebody else or ignored.