Totally understand why you would be offended by the slide. Noah is a bit edgier than most, and he was likely going for entertainment value. It was not in the best taste to do it.
From what I know of Noah Kagan, he seems to be a good guy that goes out of his way to help people in the scene. If all you got out of his talk was to type faster, I think you missed out on a lot. There are lots of great points that were made that may have been lost in presentation for you. Also not sure if he fully understood why you wanted to explain why you threw the bottle, but I'll let him defend himself on that.
I'm all for being upfront and honest about things (sort of what my last post was about [0]) so its good to have these things out there. Its much more effective than throwing hotsauce at innocent bystanders :-)
0: http://frankdenbow.tumblr.com/post/7269203638/on-honesty-in-...