That isn't true in my eyes. Last weekend showed how empty a midfield can look with Pogba in it. He especially is extremely effected by the occasion and the opponent. He can be brilliant and he can be abysmal. He certainly is the most talented midfielder we have, but he probably is also the one who (averages) the least commitment, urgency, drive. You know what you get with McFred, you never know, what you might get with Pogba. He has all the tools for brilliant moments but in midfield, it is way more important to increase your baseline performance, than to increase you peak performance. That lessons was taught us by Scholes and Carrick, who usually weren't brilliant in any game, but they kept us ticking without any fuss, without mistakes. In theory, an actual 3-man-midfield (without a nominal 10) with McFred and Pogba/Donny might be very worth a try but we won't see that as long as we don't find another role for Bruno. And as long as we want to field an attack consisting of three strikers plus Bruno, we have to balance that.
For all the criticism which certainly isn't coming out of nowhere, I think, it needs to be noted, that McFred is by far the most functional one. But we have to make it work just like any other team has to find a solution to some numerical situations. We didn't have any kind of control in midfield in any game in the last 2 years. It isn't what we are trying to do. There is no point in waiting for our players to display that.