I was thinking of beginning with the fact that they're in the gambling business, myself, and that humanity as a whole would be better without a bunch of people systematically studying how to subvert the human brain by abusing deficiencies in its risk-reward computation mechanisms to extract as much money as possible from what might otherwise be the productive economy... wholly ruining a variety of lives in the process (and encouraging others to reject long-term thinking, self-control, and related virtues which frequently help a human being to prosper.)
But sure. I guess their inadequate gambling services around Celtics basketball must annoy some people too.
At least they're not the state lottery. :b