Dead on all points...even Weird Al. He has sold more records and entertained more people than half of the jokes Jann has snuck in there.
Al is brilliant -- I knew it when he did the Star Wars episode one parody within a month of the film's release -- complete with video. Also, his "Pancreas" off the latest release is a sublime style parody that combines elements of "God Only Knows," "Good Vibrations," "Heroes and Villains," and other various bits from Brian Wilson's SMiLE. To top it off, he recently spent some time doing a public appearance at Fort Bragg.
But, because he does (intentional) comedy records, no one notices his success or talent.