There's a lot of assumption and revisionism in this post. Rooney has been a fantastic player for us. He's moved around the field and played just about everywhere in the last 5 years. Even in defensive midfield. So to say that 'the rest of his game has been largely poor' is very wide of the mark in my opinion, and defies the evidence on display.
For me, Rooney has exceptional game intelligence. It's what has allowed him to play as a 6, 8, 10, 9 and 11 over recent years. Because of his profile, salary etc, people are so quick to jump on his poor performances but I think it's very unfair. Yes, he was terrible yesterday. But, unlike you, I don't think this is because he can't roll a defender, beat a man, or lacks already game qualities; I think it's because he is yet again adjusting to a new position. A position in which he is on the fringes of the game. Something he finds more difficult because he's always liked to be heavily involved in the build up.
Rooney still had a lot of pace, and exceptional all round qualities. He deserves a run up front and I believe that LVG is the right man to coach him through this transition.
There has to be some consistency. Dropping him might seem like the easy and logical approach, but you can also destroy his confidence. I think he deserves more than two games to adjust to his new role. I am confident he will come good.