Though not every player deserved the bad rap permanently, most of the guys from the "Jail-Blazer" days circa 2003-2004 were considered somewhat heartless, pathetic, and lackluster and there were a lot of jerks.
Edit: Wrong year. Look at the 2002-2003 team. You had guys like Jeff McInnis, Qyntel Woods, Zach Randolph, Ruben Patterson, Rasheed at his worst, Bonzi Wells, a crusty Scottie Pippen, Damon Stoudemire - wow, what a list. Again, some of these guys changed their reps after they left Portland, but during the 02-03 season, these guys were definitely heartless, lackluster, pathetic and a bunch of jerks.