How can this man even makes claims to be a computer scientist? I've never once lost money using Bitcoin, either due to the "fragile security" or the "crazy stupid economic model". The precise opposite, in fact: the security features have convincingly kept my money safe, and the economic model has made my money more valuable. He's an expert shill, or an expert idiot.
This puzzles me too. Sound bites like "crazy stupid" and "fragile security" are simply infantile and ignorant.
I have spent many years in IT, but not using c++ such that I can trawl through the Bitcoin code and understand it all, let alone pick holes in it. However, I have read around the edges, the wikis, github, dev blogs, code snippets, pull requests and dev comments. This, plus the fact that the software has run in the field, under duress, for 4.5 years means that I have a high degree of confidence about Bitcoin's integrity and potential extreme longevity.