When my paternal Grandad was alive and we had him up for the day my parents would put the telly on for him. If there was something on the box that he didn’t recognise he’d give a suspicious look before gruffly asking “Is it BBC1?”.
For my Grandad telly meant BBC1.Nothing else was tolerated.For him television was BBC1. The other two (yes there were only two) channels were just pretenders in his eyes. It’s what he knew and presumably what he trusted. Comfort in the familiar or an avoidance of confusing choices?