It is bs though and made to suit whatever the narrative is. Klopp gets pelters when they rest Coutinho or Mane and draw. When Conte puts same side out and don’t win people say needs to rest some and bring in fresh players. Liverpool now playing brilliantly and no one mentioning resting players was the wrong thing to do but no doubt will assume energy levels would be same as if no rotation. Just saying I don’t think there is a right or wrong.