I would would guess there are is a huge population of not-too-savvy folks who use GoDaddy for registration... and they aren't even aware that registration and DNS can be separated.
At least, I assumed they aren't putting Danica Patrick in Super-Bowl commercials for the benefit of the HN crowd.
Agreed. All of my domains have used alternatives for the last few years (Google and Name.com). But my less tech-savvy self registered my legal name domain (and variants) around six years ago with GoDaddy and never switched the DNS management over. Big mistake. Now my blog is unreachable via DNS during a job search. Better update my resume links!
At least, I assumed they aren't putting Danica Patrick in Super-Bowl commercials for the benefit of the HN crowd.