Yes, the DHS ammo buy was "debunked," knowledgeable people have done the math, and it breaks down to the amount to train and practice needed, per agent, per year. The numbers look big because the public hasn't a clue. The math hasn't circulated because people like to spread fantastic rumors rather than do their own homework and think. Apparently crumpling more tinfoil is easier than cogitation.
Ammo shortage? Look again - just like last time, the shelves are only empty if all you focus on is military calibers. That is the point - the panic buyers are trying to get the same calibers as military and LEO, to be just as good as them. It has a lot more to do with sociological locker room measuring than an actual need for ammo. Plenty of shooters can go out, buy a box of stuff they would denigrate as "Fudd" and shoot that. But it would be a loss of self esteem to stoop so low.
It also goes to what is everybody trying to do? Buy a few boxes of ammo? Recreational shooter, not a committed gun guy. Those who shoot and do so regularly reload, have all they want, and can make more. It's the .22 shooter who's stuck, they have no way to reload. Might take that into consideration for the future - what good is rimfire if you are forced to buy new only?
The ugly truth is that the panic buying of recreational shooters will sort out who is really serious, and who's just an onlooker. Those who decide to fix their issue will have ammo in the future, unlike those who are just complaining or standing in line for their rationed amount. If you like showing up at WalMart or Academy with 250 other guys for a couple of boxes, go ahead.
It's happened twice now in four years. What are you going to do to fix it?