I’d challenge this view on the basis that DS has never played this formation to my knowledge, or at least not consistently, and not with this group of players.
I can understand by all means if it’s something we start the season with, it clearly doesn’t work, we change it to something else with far more success, and then there are rumours circulating that he wants to go back to it, but you’ve just decided that it won’t work? What is your reasoning?