The points he makes doesn't really make sense, in many ways.
But the point that staggered me the most is that youths simply should go outside. I mostly agree with that, but he is aware that for a large part of the american population isn't possible?1
Since (at least) 2004 the US had an urbanization-rate of over 80% (source). This means that over 80% of the american population lives in urban areas. We are speaking of millions of children / youths that don't even have the ability to just "go outside" without running on concrete for hours.
Many people actually have the train to get to nature - but he probably doesn't know how it is to not even have a garden. (See what I did there? I applied a stereotype on you, got on a personal level. It's the easiest way to criticize. Attack the other person)
It is just that his points don't make sense. He uses stereotypes in a way that more or less makes me sick - he takes the most negative examples of people in gaming and then gives us shit for saying that this isn't the truth. "If it wasn't the truth you wouldn't react".
The thing is that he seems like an intelligent person, who does it knowingly - which is a shame, because he has people who believe him. He probably himself has no real problem with esports, he knows enough to see which stereotypes will hurt.
For example chose a very specific match to show, where the casters were particularly bad (made mistakes2). He did not chose Anders / Semmler (CS:GO), no Tobiwan (Dota 2), not Deman, no Joe Miller (League) - people who actually know what they are doing. He instead opted for a small-scale game where he saw the commentators making mistakes in a crucial situation. You don't do that by accident - he really worked on the image of esports he wants to present.
[1] I'm using the US here because that's where he is from. [2] I don't say they generally are bad, but they screamed way too loud and incomprehensible in that situation - listen to the Semmler-cast of the Happy-ace or the "Are you kidding me"-compilation of Anders as comparison - you can still understand them easily.