JerryRigEverything drives me absolutely nuts as someone that works in product design. His tests have zero basis in reality and don't actually test whether a product will survive daily use. I wouldn't take anything from his videos as an indication of whether a device is fragile.
The only thing that matters about tests - if they are fair, it's up to you to decide if the tests apply to your case.
I want to see the mechanical properties of the build. He shows exactly that.