I know why he is, but he doesn't have the temperament, just the seniority. He's too hot-headed to be an inspiration to other players inside the pitch or to be the leader in tough situations.
It would be fine him losing his mind and shouting if his play after the second and third goal reflected his position, but he didn't even try to sway back momentum with his play. He didn't try to keep the ball or to organize, in fact he lost the ball a couple of times with terrible passes, one which I think led to another goal.
I'm not sure United has that kind of player now, tho, which is a problem.