It's a major pain to write YAML for Home Assistant. Some parts of Home Assistant lack complete examples which are up to date. The documentation doesn't include examples for every single thing. Part of writing some automations was just a lot of trial and error, looking things up on the Internet, validating the configuration, and restarting Home Assistant. It's just not a great experience.

Discovering what has to be selected to use as an action in the automation GUI is another nuisance. The most recent example is with a light I wanted to set to 20% brightness. I had no means to find something with the keyword "brightness" or anything similar. It turned out that this was exposed as turn light on.

Breaking changes are their own source of friction. My only advantage has been that many of my automations are now just GUI automations with some custom YAML where it can't be avoided.

All of these things are far beyond what a non-technical user could be able to do. It can be difficult even for someone who knows how to look things up, read documentation and update everything when breaking changes are made.

Home Assistant isn't the kind of tool one can put in someone else's hands to use it without additional maintenance or supervision. It's also not the tool to use in any commercial setting due to its countless problems.