A piece of electronics drawing 180-190W (on average according to previews) is going to produce some heat. I saw the video and the guy pull the SSD straight from the console and proceeds to touch the heatsink lol.. its going to be hot man xD
I'd imagine this is a non issue unless you totally block off the top ventilation. Unless there's mass reports of retail units overheating or failing there isn't much to speculate about other than it it produces hot air. Which should be expected from these 300w+ console.
Dont think anybody expects any issue like red ring of death 2.0. Just people taking it to an extreme. The worst I see hapening is maybe a fan runing loud and even that is unlikely.
It takes genuine talent to see greatness in yourself despite your absence of genuine talent.