I'd put off watching this as I feared that not being familiar with Mr Rogers, and his place in US culture, would be a barrier. That I wouldn't get it. But it's not a biopic in the traditional sense, as summed up by Matt Singer in his review:
"the movie is less about Fred Rogers than about his spirit and lessons"
It's also, in a way, far more about Lloyd and I really felt I journeyed with him on his arc.