And deal with breaking updates happening on HA and the thermostat software itself while simultaneously maintaining api keys and policy changes every 2-6 months.
Its hard work.
You're better off making your own thermostat relay controller
You should read about USS William D Porter, this F18 story isn't even close to the history of that fletcher class. At one point it fired a live torpedo at the Iowa with roosevelt on board.
To be fair, android custom keyboards are ridiciously insecure. They have access to effectively everything on the screen and what you're typing while also having access to make external requests.
The solution is for Android to allow you to select keyboards per app
Unfortunately I can't access my banking app without a "certified virtual keyboard". I have to flip back to gboard whenever I want to check my bank balance
My european city of 1mill pop has execellent public transport and trams powered by renewables. But it's still car dominated, people still choose to drive everywhere and demand they park within 20m of their destination.
Honestly the choice needs to be taken away for those capable of using their own legs.
This is the way.