I just posted this here: Home Assistant Community Add-on: ADB - Android Debug Bridge
Regarding the Fire TV component, this is already implemented in my custom component. I’m working on getting it integrated into the official component.
Configuration example:
media_player:
- platform: firetv
name: Fire TV
host: 192.168.0.111
adb_server_ip: 127.0.0.1
Comparing the Fire TV and Android TV components, I haven’t tried the Android TV component, but there are some device-specific tweaks and so I expect that each component will work better for its intended devices.