Dan Shaughnessy and Peter May are both very good sportswriters who are hardly bitter towards the Celtics. In the case of May, objective would be a better description. Shaugnessy writes an opinion column; it's not supposed to be analytical or filled with behind the scenes "news." That's the reason the Globe employs Spears and May.
To say there is no uniqueness in writers because of all the blogs is just plain wrong in my opinion. 99% of the writing quality on the blogs pales in comparison to a fine daily like The Globe. The blogs are worth checking out for some light entertainment, but I look to The Globe first and then the Herald for reporting and analysis.
And, by the way, Steve Weinman is the one guy people should take the time to read around here. His perspective on pro hoops is well above the rest and his writing is very good.