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.

10 hour shifts max to answer your questions.