I'm interested in understanding why this is being upvoted so aggressively, if someone who upvoted this could share their thoughts. (This really is a serious query- i don't see anything in the content that warrants an upvote).
I'm guessing people are buying into the standard anti-powerpoint rant. I don't see much value in it either. I don't particularly care whether speaker X wants to give their slides away or not. But the concept is, as usual, generating a fair amount of me-too-ism.