It's bizarre to me that folks are blaming WiiM and not Apple.
Apple gets mad at WiiM for making Airplay transmitting available.
Apple then roadblocks MFI certification for WiiM Ultra.
Apple designs Airplay (and other software features) in a way that requires a special hardware chip for "certification". Apple further designs this walled garden system so you cannot just include the chip and then get certified later, blocking manufacturing of certified devices until you pay to play and wait for the overlords approval.
Seriously folks, can we not see a problem with Apple here?