Danny's original intention was to take the EFL Trophy seriously again this season, but that changed due to the congested fixture list and inequitable postponements elsewhere.
Last night was all about getting the game out of the way, nothing at all suggests that Danny believed it was worth playing his best team to try to win the game. He knew Doncaster would field their first team due to their ten days off, and he knew he would be unable to field eleven players capable of giving them a proper game within the context of the schedule. He could have done so, but still lost. Therefore he selected a weakened side with planned substitutions and a number playing out of position. His comment about the supporters was very revealing in terms of indicating his approach - he said the same thing at Blackburn last year.
Ironically, he was probably further annoyed that he had to field a stronger team than he would have ideally: had Adebayo-Smith, Bradley and Hesketh not been injured, I am sure they would all have played in addition to Lewis, away with Wales.