I see where you are coming frombut the players we have now and the manager we have now are not the same in the Moyes are, so how can it be plaguing us since Moyes.
martinez destroy the work ethics, koeman sign players that lack grit, Silva never sign a midfield with pace power and tenacity. Carlo will have a hard time trying to reverse the damage done by previous managers.
Work ethic is crucial. I can only imagine the players are either not fit or not train to emphasise on simple off the ball movement. Can’t think of any other reasons. We have plenty of energy under Moyes.