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.
I first saw wireless charging many years ago in Helsinki airport. Built into the table of a food outlet, if you had a compatible phone - you just placed it on the table and voilá.
I'm in bars, restaurants, coffee shops, cafes, train stations, airports, on a daily basis...and I'm always in need of finding a socket to charge my iPhone. I carry an external battery, but sometimes that's not convenient.
I'd love to sit down in somewhere like Starbucks and literally just place my iPhone down on the table to charge whilst I drink my coffee.