I'm sorry, I don't want to appear insistant, amatuerish or competitive but I don't agree in the slightest.
Scott very rarely has appeared as 'weak', in my humble opinion. I agree that Whedon's take on Scott is not inapropriate. He certainly has never been the type of leader that Captain America is to the Avengers, or Superman is to the Justice League, but in all fairness, they are some pretty big boots to fill.
He has made mistakes, his judgement has been clouded, but for a very, very long time he was the professor's right hand man for a reason. That reason being he understood where all the X-men fit in the 'team' equation and could capitalize on their personalities and abilities. He has been a trusted and admired leader by the younger X-Men.
The thing is, all the X-Men are now adults and have experienced alot, they could all be 'leaders' in they're own right, and many have, but this recent re-iteration of Scott by Whedon as 'wet' and uncommited is A NEW INTEPRETATION.
Look at Astonishing X-Men #2, Kitty even says this to Emma - "Scott Summers has been a leader all his life. I see him questioning himself, taking orders from you -- " I think that the implication there is that, Scott was always a STRONG leader, pre- Emma.
Which he was, take some time to look at some important X-Men stories from years gone by, most of them will show Scott in a healthy authoritive capacity, a far cry from the way he has been presented recently in ONE book: Whedon's Astonishing.
Look, I think what Whedon's doing with Scott is great, innovative and exciting, but don't convince yourself that Scott was never a great leader, because that is just bull****, IMHO.