Martin Scorsese has gone on at length about the rise of superhero movies. He’s not a fan of them, not taken individually, but what they represent to Hollywood and how their prevalence squeezes out more personal visions that don’t fit into a blockbuster framework. And yet, Scorsese has largely remained silent on Joker, a film he was courted to produce but ultimately decided to back away from. Todd Phillips’ movie, which became the first R-rated feature to gross over $1 billion worldwide, wears its Scorsese influences on its sleeve, particularly Taxi Driver and The King of Comedy. …