Simmons just made the longest jump shot of his career...at 22 feet.
Recent Deadspin article talks about how Boston is able to sag off Simmons because he's completely incapable (or unwilling) to shoot from the outside:
"Yes, Ben Simmons's 22-footera bailout turnaround jumper with the shot clock running down, but a midrange jumper nonetheless!was the longest made shot of his NBA career.
Simmons was good in the Christmas loss, scoring 11 points on 4-of-9 shooting, plus 14 boards and eight assists, though with four turnovers. But Philadephia's offense ultimately runs through Joel Embiid and Jimmy Butler, and both men's jobs are made that much harder by opponents knowing they don't have to worry about Simmons's jumper.
Consistently throughout the game, the Celtics pulled a defender off Simmons and double-teamed elsewhere, particularly on Butler in the pick-and-roll or Embiid in the post. Both men still got their points, but they also combined for 10 turnoverssix by Embiid, who as the game went on found himself with the ball less and less.
This is potentially to be read as criticism of Brett Brown's gameplan, but it's also a function of the realities of the personnel on the court, and when a team finds itself playing basically 4-on-5 on offense because your opponent doesn't fear your point guard's shot, eventually you're going to stop passing into that double-team down low."
Simmons can't be an elite NBA player without that jump shot. He only makes it harder on his teammates.