It didn't though. 19/20 yes, our form collapsed after Christmas, when one of the players you are picking on, Tavernier, was injured. Consensus at the time was that his injury was a huge reason for our loss of form. 21/22, we were dropping points all over from day 1. Malmo papped us out of the CL in August. Gerrard had lost it and we all knew it at the time. It wasn't a player mentality thing, the whole thing just went wrong and that started with Gerrard. It wasn't a collapse comparable to this to this one. 22/23, again, we were dropping points from the beginning. It wasn't a collapse, they hammered us 4-0 in September and were simply a far better team with better players and manager. And again, an injury to one of the players you are choosing to pick on was the number one reason for us dropping points (Goldson). We only dropped points in 1 single game outside the old firms that Goldson played in, and it was due to a red that wasn't a red to Lundstram at Easter Road.
You are massively oversimplifying this collapse under Clement if you think you can pin it on the mentality of only 3 players based on shoddy comparisons to previous seasons. Our tactics are a mess, we have been riddled with injuries and we look knackered. We don't have real quality players. There are lots of reasons for it but it certainly isn't the simplistic one you and most on this forum have gone with.