Why aren't some launchers compatible with some devices? I was reading the reviews of the Google Now Launcher where they have stated that after installing the launcher the device has audio issues.



I did not understand how can a launcher affect the hardware output of a device because as far as I understand the launcher only gives a pure vanilla experience.

Is there a possibility that a launcher like Google Now Launcher is not compatible with some devices? (Even thought it meets the requirements of the launcher)
The launcher can't modify device audio input itself. 

There always is a possibility for something to not work even when it's marked as compatible (like HTC Explorer with Snapchat). It should work but it doesn't.