For the technically inclined but not quite techies, they can just install LibreELEC on an SBC (which can be but needs not be a Pi) or a Mini PC.

Of course that still won’t be simple enough for the vast majority of people out there, but it does lower the barrier somewhat because LibreELEC is all preconfigured to turn the SBC/MiniPC into a media device so people don’t need to know Linux (though it is Linux and if you do know Linux you can do in it all the other stuff you can do in Linux).