I saw one of his video's on introversion and he specifically said he was INTP. If I find it, I'll direct you to it.
It was actually the very video in the OP. Doesn't really mean anything though, just because he thinks he's INTP and he tests INTP doesn't mean he is. I personally somewhat doubt his INTPness but considering I care almost nothing about this stuff anymore I will give his own views the benefit of the doubt and why am I posting this?
Anyway, I saw this video yesterday. I think the Idea Channel often has interesting (albeit mostly irrelevant) ideas, but I admit I found this one disappointing in scope and content.
The most interesting idea I found in this video was something that was more hinted at rather than stated, and that is that societies and cultures throughout history have valued some particular archetype above all others, based on the needs of that society or culture. Of course, this really isn't something I haven't thought about before, this video just reminded me of it.
Furthermore, the idea that introverts and nerds are "getting their time in the spotlight" is absolutely ludicrous. It is instead the case that certain social groups (not the least of which are the (hilariously self-described) post-ironic 'hipsters') have picked up these archetypes for... some reason (although I highly doubt it is for the purpose authentically valuing what these archetypes have to generate to society), and have caricatured them almost to the point of satire.
The whole consideration of the social thought patterns is interesting, however, as whether these types of people are generally well-accepted and tend to be 'popular' in society or their bastardization of pretty much any culture they decide to infiltrate causes most of society to detest them is really up for debate.
Even ideas which started out as authentic are entirely destroyed and rendered useless if they reach the gaping hands of the masses, because once some idea becomes admired for the very authenticity it once had and spreads throughout the society like a meme (or virus), the droves of people who claim they genuinely relate with that idea for the sake of being 'popular' within the context of the meme instantly destroy any authenticity the idea originally had and thus make it uncool. Eventually the same will happen with the archetypes of introverts and nerds (if it hasn't already). Thus the cycle continues. What a mindbogglingly worthless society.