Earl is a fan of 100% quality play, no slop, no lucky rolls, etc....which is an unrealistic expectation for the game.
Even the great Pearl himself gets a good lucky roll here and there. But he's been one of my favs for too many years to recall, and I do believe he claps to show appreciation and respect. And sometimes he claps to let the crowd know something just happened that should be considered clap-worthy. I've seen him, during a runout, shoot a straight-in stop shot where the OB was just a couple of feet from the pocket, and when the crowd started to clap he turned and said "stop it", because he thinks it's stupid to clap for every shot. I'm expecting to see him wearing a helmet soon! Lol. Gotta love the guy...one of the greatest ever!