In my experience, modern entertainment takes too much cognitive load to get up and running. With streaming/on demand, I have to make pointed decisions on what show I'm watching. I don't always want to make a decision right now of what to watch, I just want to watch something that's good enough or fits a certain theme. TV Channel creation programs, like DizqueTV[0] or ErsatzTV[1] have taken the load off, or at least lets me do that cognitive work in advance when making the channels.

You still need some way to get input to swap between these digital channels (I use Plex to surface my shows and schedule), but if you have existing local content it really feels like the "old" way of doing TV. You can even add commercials between episodes if you wanted!

I'm not sure if I'd call this foolproof for a 94-year-old, especially since sometimes the software needs to restart, but it's a step above modern streaming IMO.

[0] https://github.com/vexorian/dizquetv [1] https://github.com/ErsatzTV/ErsatzTV