I think it was just as much influenced by the story of Dennis Brain the French horn player, who used to read magazines and the like while waiting for the horns to come in, during rehearsals with the LSO or whoever, he had a bit of a row with the conductor, Sir Adrian Boult or someone, who got the hump feeling he wasn't giving the rehearsal it's due respect and attention. Mr Brain retorted that provided he came in at the appropriate time and played the 1st horn part adequately, who cares, and carried on reading😁