I'm seeing this myth more and more--that fewer people own guns, and just own more of them, yadda yadda.
A) 
Even if true, so what?
I bet .05% of individuals own 90% of the newspapers. What does that have to do with the First Amendment?
2: I'm well-placed to debunk this.  If millions of people were getting rid of their guns, then one of two things would happen.  
2a} your local police station would have people lined up to turn in guns for destruction. Call them and ask. They're going to laugh at you.
2b] your local gun store would have people lined up to sell their guns, the market value would plummet, and I'd be buying used guns for twenty bucks a pop.  I only wish that were the case.
c; If this were a thing, it would mean fewer gun owners, so why the urgent panic to pass more laws?  The "problem" would be correcting itself, just as smoking is a dying habit.
IV: In other words, it's morally corrupt, intellectually dishonest bullshit from left wing cowards with small penises. As usual.