There are a lot of Blazers in the past who I could feel pretty angry about essentially stealing money and talent from the Blazers. Guys like Rasheed Wallace, Bonzi Wells, Zach Randolph, and J.R. Rider didn't have Oden's injury problems and, at times at least, played very well, but because their on- and off-court antics they decreased their value so much that the team couldn't get in trade nearly what their talents would have otherwise commanded. Those guys, through actions that were totally within their control, damaged the Blazers.
Oden's knee injuries haven't come from any actions he's taken other than simply trying to play the game that he was hired to play. Nobody held a gun to the Blazers heads to force them to sign Oden's contract...in fact, they were quite giddy to do it. Injuries are a part of the game, which is part of why contracts are guaranteed. Teams can elect to protect themselves, at least in part, by carrying insurance against injury. I suppose that there could be changes in the CBA to provide more protection to teams who suffer injuries to major players, but that's a topic for another discussion. I don't see anything to blame Greg about.