The beauty of this thread is, after reading the responses,
I don't even have to watch the video!
I don't relate to the overly enthusiastic presentation, but I'm not put off. Young people use too many superlatives.
I think the concept is to make a fat, flat tone without dampening.
It's valid.
Benny Greb mentioned in an interview he often tunes like that. Even Buddy said he didn't care if a lug was loose if the drum sounded good.
There are a lot of people who are hesitant to tune in any way that isn't as even tension on all lugs as possible. They think they'll ruin the rim or the head.
Sometimes ruining the head is a valid way to tune. It depends on what you want to get and how it sounds for the situation. we're lucky to be drummers who can do whatever we want to get a drum sound and not be constrained by rules of defined pitches.
As a (possibly) middle age person, I don't relate to the overly enthusiastic presentation, but I'm not put off. Young people use too many superlatives.