The problem with Poch, Jose and Conte was that they got great results, looked like they would achieve things, but ultimately when they left we were in a desperate run of form.
That's why it's so hard to pin the blame on anyone other than the manager.
How did a team, in Poch's case finish 2nd and make the CL final fade in a few months? How did Jose get a team to the top of the league 20 games in, then fall away thereafter and Conte's team who finish a season on an up and start the next well, then fall away again.
How does a team hit a high and then fall away so quick?
I've been saying since Poch that there's far too many weak minded players who lack the skill and mindset to be up there year in year out.
Some of them can put in sporadic performances over a contained period. But they all revert back to what they really are, which is lazy, tactically inept and generally a liability.
