Not well enough according to you. It sounds as though Pogba failed to do his job.
Incidentally, we were awful offensively last season. Is that all on Pogba?
You're not making any sense. I never said Pogba had all the responsibility in attack. I said the midfield (as a whole) has roles to do. Those roles being helping the attack, helping the defense, running the match through passing, and being its safest passing option. If Pogba does one job incredibly well, it means the midfield is doing well in that department. Note, the midfield, not the entire attack. So that means the midfield's other 2 players need to provide what Pogba doesn't provide so that the midfield as a whole gives to the team in all areas sufficiently. It doesn't matter how you accomplish this. What matters is the sum of the midfield accomplishes all its tasks.
Matic helps in no areas in an impactful manner. He's not the defensive equivalent of Pogba, Kante. He's not the passing maestro David Silva is. He's not the midfield's energy. Look at McTominay. He's not some specialist in defending, but he helps through his energy.
We all recognize Pogba's flaws as a player. Which means you want to compliment him by having your other midfielders provide what he lacks. It has nothing to do with catering to him. As a team you want all your players fitting one another as you want the best team possible. Who seeks out a team that doesn't fit playing next to one another? The reason why Pogba is a mainstay in the midfield is because he's really good at one portion of the midfield's roles.
Matic doesn't need to be complimented. He provides nothing special to the team. Take Pogba out and put in another midfielder and the team just loses its creative ability and doesn't get all that better in other areas unless they're good at those other roles. In which case, we just go back to the basic fact that Matic doesn't compliment that new player. Why? Because Matic is good at nothing.
It's funny that Juve had the best midfield in the world with Pogba in the team. Maybe because all 3 players complimented one another and all 3 provided certain roles at a really high level? Couldn't be. It's impossible because Pogba needs to be carried defensively. Nevermind the fact that he carries the United midfield's creative burden.
I feel like many posters here only look at the defensive side of the game as a requirement for the midfield and so the team has to "compensate" for Pogba. Meanwhile nobody applies that to the offensive responsibility and how the team has to compensate for Matic and McTominay's lack of ability for that role. Or how the team has to compensate for the entire midfield's inability to run the game through passing and technical quality. You could say the same with regards to energy and how McTominay is the only one providing in that area. All of which still leads to the fact that Matic provides nothing really. He's a placeholder, slow DM. DM in name only.