This video is riddled with logical fallacy and misinformation. Hint: Whenever someone opens an argument with ad hominem or ad lapidem, you should probably be weary. There's some valid points which are better addressed by people who are not biased. Wouldn't use this as your sole source for why LISK is a failure.
The first comment on the video balances out any of his misconceptions, specifically about non-blocking IO, and actually highlights where it's issues lie. Less the whiny voice.