Scam and/or pipe dream: There's no way in the US you can just put up an ATM machine for some unknown crypto currency. There are reams of legalities, approvals, verifications, certifications, etc. to guarantee that the public isn't being ripped off and the cash involved isn't going straight to the mafia, Al Quaida, etc. Even if they somehow have all of their paperwork done how are they going to get this thing installed in a mall? That's a whole different set of internal paperwork for each mall owner, owners who don't want to risk being on the news as the place where the terrorists funded the latest attack, etc. Furthermore getting into a mall would require the experienced seasoned sales people and personal connections necessary to get face-to-face meetings with the key high level decision makers who'd sign off on something new like this.
you seem to love your nanny state..and you're also wrong, there are coins with ATM's in the United states of regulation. And contrary to popular belief we aren't the only country in the world.
And as the IRS has classified crytpo currencies as property/assets buying them in a mall is like making a purchase not exchanging money. Obviously whenever some self appointed king decides they need to shut them down they'll disapear and the sheeple won't make a peep. But for now it falls into a grey area I guess and besides NY states proposed regulations nobody has tried to kill it yet besides the IRS which really hurts it's viability as a currency and treats it as an asset with capital gains taxes when you spend your coins..