But that's not what he said. If you want to argue he is not good enough off the ball sure but you can't say somebody is lazy when he is 1st in sprints and 2nd in distance covered.
Does it really matter? It's not a distance and speed contest, if he is topping that than it certainly means he wastes much of his energies needlessly without affecting the game while when he needs to put in the intensity without the ball he shows slack Ness. He is late to press, he is second to fight for first and Second balls in the midfield, he doesn't track back as fast as he runs forward, he let's the opposition midfielders run past him and build a good attacking move, he needs a more mobile and solid mid partner who can cover his slack Ness in controlling the play. Wasting energies in runs where he can't affect the game and getting found out defensively and lacking at midfield basics is not very wise.
If he looks like he's still the best player in the team is because he is still the most creative player and better passer in the team where the defense can't pass the ball forwards and a partner like Matic or fellani who keeps passing sideways.
The manager does not play to his strengths we all know that but he does not improve on his deficiencies and put his energies to good use in a more efficient way.
When the level of the game gets high these small little details and lapse of concentration are the difference between winning and loosing and he will be found out in those instances as the other team is also capable of keeping the ball.