I think booing is a much more precise way to get a message across rather then standing up and shouting "Hey you Sixers, I feel resentful towards you as a team that I forked out hard earned money to sit and watch a half assessed, I-could-care-less effort from the majority of you. Next time can you please not play such a soft, disorganised, uninspired game despite the fact that you have done so three weeks in a row."
I for one wasn't one of the boo birds. But I sure as hell wanted to boo them. I don't know what it was that held me back. I know Maher doesn't agree with it, I can understand that. However, if his team-mates the last three weeks had played with the determination that he himself has shown his entire career, then win or lose, they wouldn't hear any boos.
In my mind, the fans are more than frustrated. They are insulted by the effort shown on the court and by the lack of accountability for it. No one with the Sixers should be surprised by a few fans booing.