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.
And there’s nothing wrong with using port 80 security wise. Binding a port doesn’t mean you’re opening it on the firewall for the world to see. Plus if you’re opening some port on the firewall, what port you use doesn’t matter - it’ll be scanned by an automated scanner shortly regardless of port.