Can we emulate Kindles?
why emulating Kindle OS isn't a standard feature in existing emulators


Android isn't like Windows. Sure it runs on billions of devices just like Windows but there is no one single unified OS binary for Android that runs across multiple SoCs. Each Android device needs a lot of closed source blobs from the SoC manufacturer, starting from boot to every single driver. 

There is nothing available openly to make Fire OS run on hardware other than a Kindle. No source for the OS. No drivers. No unified binary blob that runs on architecture that a VM emulates.