Unfortunately, streaming video is still going to be more complex than traditional television no matter what you go with. The others make a good point about geoblocking, too. Have you tried any streaming services yourself to see which ones you can get?

I would like to make a suggestion for a remote. The best universal remote I've ever used is the Harmony Smart Remote. It has three buttons at the top to choose what you want, a button for turning everything off, and the rest of the buttons map to most remotes I've found. The setup is pretty easy and the remote has a great feel to it, but whether he could use it might be a subjective thing only you can answer.