I think the issue with his pragmatism is that it just doesn't work when you consider the larger picture. Within the big 6 table, there are 30 points at stake. A club like Spurs should be happy with 10 out of the possible 30 points as they're one of the weaker big 6 sides. Now to get those 10 points, There are two options, first being to go for wins in your home games against Arsenal, Chelsea, Utd and getting atleast a draw away at one of these 3 sides. Anything you get vs City and Pool is a bonus. And the alternative being 10 draws, which simply isn't going to happen.
Yesterday's was a home game against a side that is 4 points above them. They needed a win to have a good chance of finishing in one of the CL places.
Looking at yesterday's game, it just seemed that the plan was to have 10 people behind the ball and launch the ball long when you get the possession. That system would simply not work when Kane's your striker and especially when he's coming back from a long term injury. Pumping the ball would have worked 10 years ago when defenders including FBs weren't particularly fast and they played a high line. However, its no longer the case. In our side alone, AWB has great pace, Lindelof's pace without the ball is similar to most attacker's pace with the ball and hence he can catch them and Shaw isn't particularly slow. So, instead of doing that, target weaknesses of the opposition - aerial balls, counters from Shaw's side as he ends up pretty high on the pitch quite often and so on.
As everyone has been saying, Mou's tactics are past it. He hasn't reinvented himself over time and the decline is evident.