100%.
He’s leaden-footed. With that big chunky frame of his he’s never going to become more mobile.
He ‘can’ develop better positional sense, but he’s never shown it. That yesterday - ball watching by moving (slowly) a few steps up, leaving a striker wide open to receive an easy pass, which he then scored from - was amateur level football.
The worst education for a defensive player is being in a Sean Dyche team, because being in such an ultra defensive team of two banks of four, sat deep, any weaknesses will never be exposed (thus addressed). You develop nothing as a defender there other than get plenty of practice heading balls away from opponents you have managed to frustrate. When you then move to a side that plays higher up (which is everybody else), you need to be able to know where to position yourself in regards to not letting a forward get open to receive a pass, and (ideally) you also need pace to track runners that can get in behind your higher line.