I still don't see how this is useful.
It makes perfect sense for smaller appliances (like smartwatches) and I think would be amazing for things like laptops, but tablets and phones? Why? You can't use the device while it's charging easily. I can take a private phone call when plugged in, but I can't when "wireless charging".
Not to mention, it's not "wireless charging", because I still see a wire. There's patents for TRUE wireless charging, including an upcoming case that charges your phones with ions from the air, so when that becomes a thing I'll be impressed, but I not once ever used wireless charging on any of my phones because I just didn't find how it could be useful.