Yes, well you aren't comparing two of the same things. Your power brick is galvanically isolated from line power with a safety barrier. There is no need to attach any part of the charge cable to earth ground because of this isolation. The vehicle, on the other hand, is taking line power directly into the charge port. There are worldwide earth-grounding regulations that dictate the ground prong of the outlet is attached directly to the chassis ground of the device it provides power to. There is no computer smart enough to detect an improper ground, and no certification agency will accept a circuit that intentionally disconnects the device from its earth ground connection. Agency assumes the outlet is wired properly, and this is generally a safe assumption given that nearly every jurisdiction requires a licensed electrician pull permits, install, test, and ensure is inspected under the authority of the municipality. What these jokers are doing is intentionally unsafe. What is implied by the video is simply not possible without significant and intentional tampering.