Saynomore,
I think you express the opinion of the Majority of Canadians very well.
I know of a 12 year old girl who helped her 23 year old drug addict boyfriend kill her parents, because they didn't approve of their relationship and killing her 9 year old brother for telling her parents she was sneaking out to see him.
Did she know what she was doing - definitely
Does she regret it today- most definitely.
For those that think the "brain washed boy soldier" only did the things he did because his Father was a bad influence will need time to find out if they are right.
Part of the answer will lie in whether any of the "settlement" money finds its way to ISIS or Al  Queda. I hope the money that hardly reflects the money Mr. Khadr would have made had he stayed in Afghanistan or returned to Canada with his Citizenship intact, even after being associated with Al Queda, is put to good use and gives Mr. Khadr a better life, but forgive my skepticism.
Time, only, will tell.