I don't think anyone doubts that he'll learn from this year. He's tough mentally, and his self-belief has probably never wavered.
But to me, he's been indulged a lot despite his steadily decreasing contribution to our play, both attacking and defensive.
Up until March, he was actually impressive in the sense that the defensive side of his game had improved - he was a pressing machine (Statsbomb did a graph on it), forcing turnovers and crunching into more challenges. That made up for his decreased attacking output.
But in April and May, he just fell off a cliff. And despite the fact that another player stepped up to the plate in his absence (Lucas), he remained a constant starter, despite offering nothing in both an attacking and defensive sense against most of our opponents (Ajax aside, where their naivety gave him space to play). He tried, but the spark just seemed utterly gone from his play - it was laboured, barely functional.
It was unfair that Lucas was left out of the starting lineup in the final. The spot that Dele occupied, to absolutely no effect (he was a ghost the entire game) - that should have gone to Lucas, and the game should have started with Lucas and Son next to Eriksen, all of them behind Kane.
It would have been a reminder to Dele to not take his spot for granted, and a fitting reward for Lucas for basically getting us there in the first place. It could even have sparked the fire in him, to the point where throwing him on in the second half might have meant a better performance from him, as he sought to prove Poch wrong for benching him in the first place.
Instead, we're left with regrets and dreams of what might have been.
Going forward, if I could wish for one thing from Poch, it's that, when he gets a stronger squad, he takes a firmer line with some of the boys. There's nothing wrong with loyalty, but sometimes a bit of tough love now ('you're benched', or 'go home and recover from your damn ankle injuries, Harry') might end up benefiting these lads in the long run.