It seems to me that they don’t have the employees on hand to handle the traffic. If 2 planes are sharing a runway that means a pilot is either aborting a takeoff or a landing. The article doesn’t do a great job of relaying that the pilots are the ones aborting, the controller cleared 2 planes for the same runway. They do this twice a week on average across the US. We are talking about hundreds of people’s lives. While rest is important I’m not sure it’s the answer to this problem.