The article insinuates that the NRA is one of the largest contributors to political campaigns, which is not true. It spends a lot on political ads, but doesn't give very much at all to candidates.
The article also misses the boat on Don from Don's Guns in Indianapolis. He's sore at the NRA because of the backlash against him following his appearance on TV news before the sunset of the AW ban. Standing in front of a wall of black rifles in his store, he said that the ban should continue, and there was no reason for people to own "assault weapons". From everything I've been told about him, he's a first-class jerk, and his appearance on the news cost him.