I have a wifi-enabled garage door opener whose manufacturer discontinued the Google Home connection for so that you have to use their app and see their Amazon or Walmart ads. I also have a wifi-enabled alarm system whose manufacturer apparently doesn't care about Matter integration or whatever. So leaving the house in my car requires the use of two different apps (three if I also need to turn off lights).

In actuality I just use the physical buttons. But there was a time that I had a beautiful dream of getting a smart lock and setting my house up to lock the doors, close the garage door, and arm the alarm when I pushed a button in the car--and, more importantly, undo all of those things in reverse when I got home.