I didn't find them that bad. In fact, I found them to be pretty good. There was a lot on each slide, but then the man clearly has a lot to say. Another thing is that the slides were probably designed to be useful as a standalone resource, so that in front of an audience they are there for reference but people are supposed to listen to the presenter and allow him to direct their attention to the more pertinent points.
I wasn't at any of the presentations where these slides were shown, so I can't say anything about the means of presenting them itself, but as a downloadable resource I found them informative. Certainly a lot more informative than slide decks consisting of 150 single-word slides ("performance", "fast", "cool", "shiny"...) where you really had to be there, and where even nice photographs would be more communicative to those who weren't or who downloaded the slides later to refresh their memory.