With all due respect, I think it's strange to critique something as deeply personal as a technique used in creative writing.
If instead he'd said something like: "I just like the feel of pen to paper." Or "I've tried both pen/paper and a computer and there's something about using a computer that just doesn't work for me." that would make more sense. But this notion of a 'buffer' just doesn't.
Perhaps "deluding" was too pejorative; I'll grant that.