We have a tendency to use superlatives to either elevate players or denigrate them.
I agree he is wasteful, but half the time it is also down to poor team movement and no outlet for the pass.
My biggest criticism of Dele is that he generally always wants to try a clever, fancy pass and he delves so long looking for his team mate that he either kills the momentum or ends up losing the ball. His best years at Spurs were when we had all of Eriksen, Dembele and Kane in a groove.
When any of our players put a cross in and there's no one attacking the box, wasteful or poor movement?
Defenders tippy tappy at the back as there's no outlet in midfield. Wasteful or boring football?!
Positives: Stamina, Adaptable (No 10 or 8). Box to box is a very demanding role.
I think he has a good vision but needs quicker execution
I think when a player puts in a good shift, it encourages those around him to raise their game - well, it should do!
Finally, I'd blame the coach(es) as much as the player, especially for repetitive 'trademark' issues.