These are amazing options for relatives who need a computer. One of these things with Linux + Firefox will basically cover everything.
I haven’t totally settled on the distro at the moment. Something immutable, so things can’t go wrong during updates, but you also want something established that you know will be providing updates for a very long time. I’m trying out Nix for this purpose at the moment. There is no graphical App Store for the OS, but if you set up FlatHub then there is. We’ll see how it goes.