You're seriously off base in that. In many ways its like saying "President so and so is responsible because this child molester got a kid in my city". For one, he has alot going on, and he might not have know it was such a huge problem. Second, I dont know if when the main amount of this stuff was happening if he was cognitively capable of handling all of it.
I'm an athiest, and I dont believe the Pope has any more connection to anything than I do, but this Pope was always somebody who pushed for human rights, and even slapped the US around a little when he thought we werent protecting those.
What exactly would you have him do btw? I've heard of a few shady situations, but I dont necessarily recall them having him as part of it. Should he tell the priests not to molest boys? Umm, dont you think that might not help so much, being that what they are doing is illegal and against the faith? You might as well expect the president to turn robo cop and go around and personally protect all the kids in the US who are being molested.
Granted, I think he could have done more, or done something differently... but I think you are a bit too quick to try and condemn somebody that IMO truly had good intentions.
I think that it places him in an especially difficult position because of his need to have faith and to forgive. I'm not in the situation he's in, so I find it hard to judge his actions when there is so much else to consider.