This is the type of stupidity that terminates trust. If the backtrack on this, who is to say they will not go “special stupid” later.
Also, consider how they would utterly cooperate with keeping track of customer information and just turn it over to any government agency for ANY reason.
Those cool little yellow papers one fills out upon a purchase of a firearm at a retail store and are supposed to be on file at the store...will ultimately end up in the hands of the ATF to bolster their database.
There is no more anonymity.