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.
Frankly, being anything other than super paranoid is almost a little reckless.
Also, shit-talking Home Assistant is a pretty weird take. I wouldn't write it in Python configured half in YAML and half in SQLite either, but ... not having to write it myself was the fun part.