Why? It's not like they say they do, but then don't. I've seen far more implementations where the product is listed as supporting a whole bunch of profiles and technologies, but then either doesn't implement it in a useful way or simply never works no matter the device. Most often this is with devices that originally used audio, but then added support for calling, address book, media controls etc. but implement them poorly or downright broken in a fashion that makes the base functionality even less usable than it was before.
