yeah, they all get together for drinks and go over their gameplan for pbls. In fact, seeing how each trader probably trades 50-100 different stocks, and conspires to manipulate each and every one of them, they actually call eachother before running any trade on any stock to make sure they adhere to their vast reaching conspiracy. of course , the MM's are super geniuses, so they never put anything in writing , and commit this egregious act of brilliant manipulation upon all unsuspecting investors. It is so much easier to blame the good ol MM's for a losing position than to figure out that you made a dumb investment.
Man cannot fathom the answers to the vast questions of the universe, so he invents God. Gotta blame someone....