Pogba is playing at United (when fit) and is certainly well paid. So the only other issue is, are united good enough for Pogba/Pogba’s ambitions? Does that qualify as ‘something to say’? Does that necessitate him talking about the employer publicly in a disparaging manner? I don’t believe so
Of course it qualifies as something to say, he is basically making the point that almost everyone on this forum has made and agrees with. With the small difference that Pogba has a timeline that doesn't match with a long rebuild whether we are talking about his age or his contract. If as Ole said this is a 3 years rebuild then it means that Pogba will be out of contract when the rebuild is supposed to be done which means that he has to make a decision between now and then, he can sign a new contract and gamble on United rebuilding successfully or he can decide to join a club that currently fits with his short and mid term silverware ambitions.
He is talking to the club here and telling them to show some intent, we may not like it but from his point of view it makes total sense.