To anyone else enjoying this video, this man, Steve Guttenberg, is a high-profile audio tech reviewer, and his reviews, "complete system recommendations" and musings on hi-fi are excellent. For many people, reviewers of hi-fi gear is the closest they can get to having an idea of what they're buying now that brick-and-mortar stores with listening rooms are harder to reach.
I don't like everything he says, and I'm sometimes disappointed to see him refer to people who think Ethernet cables make no difference above $20 as "cable deniers" (though analogue cables can make a difference, especially interconnects) - but I don't think he's being dishonest, I think he's misinformed, and there's more than his "whatever works for you" takes on engineering matters. At least in my experience.
I'd also recommend The British Audiophile's take on speaker placement and distancing: https://www.youtube.com/watch?v=VHOYXjVJKKY