It really bothers me that this is a highly upvoted comment since it has absolutely nothing to do with the content of the post in question. I wouldn't be surprised if that presentation was posted on HN a while back. Search for it and go comment there.
A person's reputation is simply a signal in determining whether of not whether it is worth your time to read or listen to something they have said/written. Being upvoted to the front page of HN is also a signal. The latter signal is far more valuable and relevant than the signal you have brought up since it is directly related to the content in question and not merely the author.