“Transferring all that energy into a confined space very quickly just might go boom. Now if this device really worked, was compatible with the existing electrical generating and transmission systems, then the manufacturer would be selling the systems around the world. Like every other new product extensive use by consumers would reveal the truth.”
We already have 600 kw chargers in place in the US and they don’t go boom.
The safety and efficacy of this device will be determined once it is in widespread use in multiple settings. Just the same would not recommend charging youe EV in an attached garage while you and your family sleep.