I think it's both, honestly. I think you can have a mediocre product on the field, but people will still tune in if they enjoy who they are listening to.
When I lived in LA, I listened to Dodgers games all the time. I didn't care about the Dodgers in the least. I didn't care about their players or whether they won or lost. I just liked listening to the GOAT, Vin Scully.