Not sure what he has said that is wrong, to be honest. We have all been disappointed with how much the past 5 years have been wasted and have been very vocal about it.
Pogba has always been open about his frustrations and 9/10 they match the same frustrations that we have. I think it is clear he came back because he loves the club and had a romantic side that wanted to come back and win trophies. I also think Ronaldo has that romanticism in him too, but our supporters are so downtrodden that we refuse to believe any player cares or wants to join us, etc.
In the day and age of 'mercenaries', it should be good that feels this way and I hope all of our players feel this way and do all that they can to turn things around (those that are deemed worthy of staying, of course)