they are about as punk rock as Disney Ford or KFC.
now that shit's funny as it is true. And if I heard some one call Daft Punk the godfathers of electronic music I might punch them in the throat. (and I like Daft Punk)
I really can't speak to their "punk" authenticity. I've only heard them in the ether - I was sharing this more from the music-doc/friend-project perspective.