It’s not about being “good”, it’s about being effective.
Even those who denigrate Pogba have to admit he is a “good” player - even Keane and Souness admit his talent. In fact, most people accept he’s actually “world-class”, whatever that means. It’s about whether he is effective - is he actually producing on the pitch, consistently enough, and what conditions are necessary for both him and players like him, to do so? What level of teammates, what level of coaching, what sort of tactical plan/philosophy, are needed?
Managers have always built their teams around players. Pogba is no different. He is struggling in this side - just as peak Scholes, or peak Keane, or peak Giggs would have struggled. They would have been less effective than they could have been surrounded by better teammates.
That is the point. Pogba could be (and I daresay, will be when he joins a better team in the summer) far more effective surrounded by better quality teammates. He certainly is trying - he’s been our best player by some distance this season. He’s clearly a couple of levels better than anyone else in the squad - blaming him for not carrying this squad further up the table is ludicrous, as are the Hazard comparisons. Hazard has a far better set of teammates. Pogba has actually done well this season, and I doubt he’s going to accept this mediocrity any longer. Top players want trophies. He’s off, and who can blame him?