It was cool to see him use a few concepts that I've used when trying to explain cryptocurrencies to friends: Chuck E Cheese tokens and Beanie Babies. (The other is Easter Egg hunts). Overall, I'm glad that John Oliver's done a piece on this because he's previously been successful at bringing once niche topics to popular culture (net neutrality and sport stadium financing).

I think blockchain (and to a lesser extent ICOs) does have long-term utility. However, the current lack of oversight combined with hype/FOMO for cryptocurrencies and ICOs is the perfect recipe for those "in the know" to rip off the less knowledgeable.