My daughter has Kinoite set up for her boyfriend's grandparents. It's immutable, so there's not much damage they can do without admin access, and she made it look much like Windows. They were already doing everything with Firefox as it was, so it wasn't a huge transition for them.

She did go back to fix things because the grandma managed to delete the printer, and she said that the downloads folder was full of exe files with sketchy names.

I'm with you on the macOS stability in the past. The thing that gets me is that Windows somehow gets a pass in this regard, but there have been some pretty big changes over the years.