I get why there are people that don’t like how some installers do this, but this trope is really turning into the “but I don’t even own a TV” of OSS commentary.
Just use the Docker image if you don’t like it. Or get their appliance which actually supports ongoing development.
Smart Home 2023Q3 status: still for hackers only if you want more than a few lightswitches that you can just toggle from your phone, and even if you do want that, stick to one vendor + system only.
Highly recommended: Shelly gear, it is easy to configure and seems to be rock solid, I've got a bunch of their remote control radiator valves, several remote control relays and a tri-phase consumption/production meter. It all worked flawlessly since installation. And instead of a regular Pi I got one that was built into a keyboard. It was mostly because I couldn't get a bare one but in the end I think this was the better option.
I had something similar. Rock solid. Wired back haul. Nice manual. I knew it wouldn’t add $$$ to the house but I was a little surprised to find out it actually put a lot of people off. It had negative value as I had to rip it out and go analog.
Even nerds looking at the house wanted to do their own thing not maintain someone else's ideal and normies refused to spend ANY mental energy on understanding it.
Was eye opening!
But your point is well taken and I'll be sure to introduce the subject at the handover if it ever comes to that.
Energy efficiency was my main goal too but no one gives a fuck about that here either so it’s a different market.