There are currently many different versions of faster charging methods. (ibtimes.com)
While, granted, fast wireless charging isn't available, the simple act of using the wireless charging method of your choice is a nice addition, as was Quick Charge 3.0. (9to5google.com)
Basically every other fitness tracker out there comes with a proprietary charging method, too, so this isn't really anything out of the ordinary. (androidauthority.com)