He says something about distributed trust and then puts 'THIS IS A LIE'. That's not evidence and it isn't an argument.
He states that developers act as a central authority, which as it relates to the rules of creating new units and where they go to, is not true, since those rules are already established for the given chain.
He says there is a fee auction death spiral, which also is demonstrably false. Even bitcoin, with it's ludicrous restriction of throughput by political means, hasn't actually gone through a death spiral from fees which rationally should have made anyone think very hard about its future.
He says almost every exchange is full of fraud. This is debatable, but does not actually have anything to do with crypto-currencies (which is what he is actually talking about instead of "blockchain").
The last slide is basically just venting about stupid things people have done and bought in to, but also has nothing to do with crypto-currencies not working.
It's amazing to me that people seem so certain of themselves while having such hollow arguments.