One of the most pertinent factors is that teams don't press Eddie anymore, they know it isn't worthwhile and the striker instead should stand right on Rodri.
We have lost the overloads coming out from the back, which is why the ball is now much slower coming forward, been like that for about a year.
Whereas previously Eddie's skillset was essential to us creating a spare man, it stands to reason we have now lost that advantage?
Possibly another reason why the inverted full-backs are asked to make up the extra man in midfield, but that is still too far advanced upfield for the first stages of build-up play.
Walker isn't reliable enough in possession.
Rico is certainly more accomplished on that front.
On the opposite side, we might start to realise just how good Zinchenko was helping to get us out on the left?
Cancelo, for whatever reason, has dropped off big time for a while and his flaky defensive ability doesn't make up for what he can give inside the middle.