Someone's "terrorist" is often another person's "freedom fighter"..I agree somewhat about Wolverine, but it's in his character to be that frank and simplistic. He's basically lumping them altogether, no matter their reasons, to say "there are no saints in Africa" which is arguable, but due to the climate there, somewhat true.
He's later dressed down by Doctor Crocodile, who shows the ignorance of some of his views. Great scene. So there is a two-sided argument going on in the book.