I heard this on WEEI today. The NCAA does not allow any NBA stuff at their tournament sanctioned games, so all of the banners and the parquet floor have been removed in favor of a generic NCAA floor and a whole lot of nuthin' for the experience of playing in Boston.
It's very silly I think. OK, change the floor if you need to have the "sanctity" of your association there for all to behold, but jeez why take the heart out of the venue?