I would tend to agree with that analysis. You have to admit flipping a butt
out the window isn't like chucking a bag full of burger wrappers, empty
drink cups and dirty napkins from the local fast food joint out the window.

Cigarette butts don't disintegrate for a long time. Plus, if the
butt is still hot, it can start a forest fire. All trash should
find it's way to a proper receptical.