Bottom line...you like a sound and I don't. I have thin-shelled Pearl's that I love, and, like you said, a 7.5mm Pearl snare that's a one trick pony. Give me a thin to medium- shelled drum with a wide tuning range any day. There are too many variables that come into play that we tend to forget when falling down this thickness/density rabbit hole. I've heard thick shelled drums sound great, but there's more to it than what the literature focuses on in the video.I'm still a thin shell whore. I like my thin shelled Guru tone better than the 7.5 mm Pearl shells. So my real life experience runs counter to what this guy is saying. I guess a Stradivarius body sounds best when it's rigid. Not. He says some energy goes into the shell...but IMO that energy isn't lost. IMO it goes toward shaping (according to the drum material) the resolved tone of the output.
I'm not on board with a lot of what he says.