Or maybe Chelsea should go back to the good old days of Roman Abrahamovich, because he was the last person that had better strategy for Chelsea in the last decades, however he was still hiring and firing at will. So we shouldn't see what the new Boss is doing now as "shambles" if I should borrow your words. I personally believe Chelsea is going through a Rebuilding process, after the exit of Abrahamovich, maybe it will take a little more longer before they will have their footing, their supporters on the other hand don't have that kind of patient.
I don’t think that Abramovich’s times were successful because he was a good owner (in fact, he was the same sheikh as the real sheikhs who came later), he just flooded everything with money (when there was no FFP yet). After the first successes, he thought that he was the king of the world and even fired Mourinho (even though he was doing quite well) thinking that he could have a team that would dominate here and there. But then competitors came and none of this happened. Abramovich may be much dumber than the current owner, he was just lucky to buy Chelsea when there was no FFP yet and loot a huge pile of money from Russia.