I see that on quite a few courses. Even some of the higher end ones I sometimes play. Since golf is a game of integrity, it just stands to reason that some us have more integrity that others. Besides butts, and and un-raked bunker sand, non repaired ball marks, I also see a lot of sun flower seed shells on greens. This is one of the main reasons I don't play on weekends, and holidays. Too many of those "dregs of society" tend to show up on those days.