This would be so awesome!
I guess home assistant is used by a lot of tech servi people who like to have control over their devices. And maybe not just for their home automation/server and home network but also for their phones. Right now (afaik) the only practical solution to have a free & open source mobile device would be a android (AOSP) without any google software/dependencies. There is many custom roms out there like Lineages OS, Carbon Roms, Omni Roms and others who serve well for this propose.
Right now it’s not possible to run the Home Assistant Companion App on any of these because (despite the app itself is open source) it relais on non-free/closed services provided by google and their cloud infrastructure.
It looks like to me the N°1 locally controlled open source smart home software doesn’t allow me to use my mobile running open source software only to control my local home assistant server (running only open source software too) but want’s me to make a contract with google and share my data (like my location) with them?