Like extraverts can never have social anxiety??
(I didn't check the video btw)
Oh I read Meged&Ovcharov started going crazy and started typing everyone with any significant role in society (or whatever it was) as ILE or EIE. Something like this, anyway. Sure, anyone can go crazy like this.There was Lytov, who made a lot Socionics stuff and after many years accidently changed the opinion about own type ILE->LII.
There was Popov, who recently have changed opinion EIE->IEE.
Those were not just "dudes from the forum". They made researches, studed others, typed a lot, etc.
So when I get doubts in anyone's type there is sense to say them to check it.
Even you. Maybe you wake up tomorrow and start typing as IEI.