I'm one of them. DJI "pro" remotes are Android devices that for some reason are completely un-googled but can run the Amazon app store; if you want to run, say, Litchy on such a device (an alternative to DJI Fly app), Amazon is (was) the only option.

Now there appears to be no option left.

They used to give away premium apps like Epic does on PC, so even I have used them.

It wasn't just devices running Android natively, if you wanted to run Android apps on Windows you might have used the Amazon Appstore with the Windows Subsystem for Android which Microsoft is discontinuing.

It is likely that Microsoft's decision lead to this.

https://learn.microsoft.com/en-us/windows/android/wsa/