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I don't think all those letters were lies. They establish that Scooter is a genuinely nice man: plays catch with the neighbors' kids, makes time for his friends etc. etc.
He also was instrumental in ginning up an immensely destructive war, in helping to conceal that ginning up, and then lying about his efforts under oath.
Good? Evil? Both, sometimes, and both at (different) times.
The older I get, the less I find anything (except the Sopranos finale, as shown on the screen) to be pure black or white. Manicheanism, or its more recent Cartesian dualism guise are almost always wrong: its very rarely either/or and almost always, in some measure, both/and.