I reckon Puel jumped the gun, started making changes before everyone was ready for it (players and fans) Maybe he was tasked with, or sold the task to the board of, life after Vardy et al, the new generation as it were. Thing is, there was life in the old dog yet. Puel went to early and was caught offside.
Don't forget though, for all that he did try to do right, the football did become turgid. Maybe the players didn't buy in to the new order, who knows. Whatever, although I thought I could see what he was trying to do and was supportive for longer than many, I did eventually come to the conclusion that he should.go. Too much too soon perhaps?