I wonder whether the reluctance of manufacturers to provide manuals is the problem? My mum struggles with technology, particularly her TV, and pays a fortune to Talk Talk because she understands their interface. We have told her that her (smart) TV has all the channels she can access through Talk Talk and she needn't be paying them all that money, but she doesn't really 'get it', and there is no instruction booklet with the TV. We have shown her how to do it, but she forgets when she's on her own, which is when she really needs to know.
There is probably a marketing opportunity for companies who either produce simplified interfaces on TVs (eg a button to return to live TV from streaming) or basic instruction leaflets that can be kept next to the TV for reference.