I doubt he has even read one or he'd have provided that list of MANY places where guns have been registered and it didn't lead to confiscation.
I'm not here to do homework assignments, SJ. It is a simple matter to google the number of jurisdictions in America (which cover somewhat less than half of the population) that have some variety of gun registration. New York requires the registration of handguns, for example. A number of places have restrictions on certain "assault" weapons, and have grandfathered in prior owners as documented by registration. I presume in those jurisdictions registration has not led to confiscation. If you care to cite exceptions, go ahead. The rest support my point.
But we have in this nation a couple of pillars that I choose to rely on before grabbing my AR-15 and threatening to shoot peace officers. One is the Constitution, and not just because of the flawed but nevertheless currently-protected status of gun ownership under the 2A. The other is the rule of law and the right to due process. Yes, guns can be confiscated from someone who is, say, adjudged to be mentally unsound. But that requires that he receive due process. I applaud the NRA's opposition to laws that might short-circuit due process rights.
But licensure and registration seems like common sense to me, and I haven't the slightest desire to take your guns away. I just want you to accept and practice responsibility, just as you do with your car.