Users are going to need to tweak and modify system files. You can say as much as you want that they "shouldn't", but at the end of the day they may have to tweak something because they have exotic hardware or want to run a specific app.

And the benefit isn't really that great, imo. A random user isn't going to go poking around /etc and modify files randomly. And if they do, something like timeshift will save them.

My go to recommendation is Mint. When things go wrong or the user needs to do something complex, there are a lot of guides out there for Ubuntu which also work for Mint.