There are a lot of things that I cannot personally testify to, but accept due to the total lack of negative consequences that being wrong would bring. Also I'll go ahead and say that I didn't watch all ~1.8 hours of the video.

I'm willing to accept as fact that the Earth has a solid inner core and a liquid outer core, despite there being no way for anyone to go check. The reason is that if somebody has carefully fostered that lie in my mind - permeating through elementary school to higher education - it doesn't really matter to me. It's definitely way more important to them that I believe the Earth is round than it is for me to know the truth.

That may seem like an irresponsible mindset (because it is). But I can live with that, if someone else can live with the fact that they're 100% sure they are being lied to by every academic authority they can find.