It's more players playing those positions
Prime Kyle Walker allowed that highline almost singlehandedly. Now we have Lewis who not even half as quick or strong stepping out of position into midfield. Right side wide open vs counters
Ake >>> Gvardiol defensively. Also sat back more making that side a lot better vs counters. Now left side wide open vs counters
Rodri one of the best ever at pinning a team in their own half.
Younger Gundo/Bernie >> Foden who get knocked over when a player brushes his shirt.
Kev is on the edge of the precipice in terms of being completely finished. One step away.