If they knew all this about Gadaffi, then why didn't they say that at the outset, even going back to 1986? That was when the US bombed Gadaffi over his alleged involvement in the bombing of a Berlin nightclub.
Then there were reports that Libya wasn't involved in that, and then they turned around and said Libya was involved after all. There was a lot of confusion and misinformation. A lot of people thought the US was wrong to bomb Gadaffi without clear evidence of his responsibility in the bombing.
But if he was a paedophile and they knew it, they should have said so immediately. That would have changed the public's attitude about the bombing.
In proxy wars i think governments have selective hearing or turn a blind eye to suit their ambition,it will never make it right though.