It's not the injury, per se. It's the rash decision to move Swihart off of catcher. He should not have been replaced by Vaz after only 8 games, but since he was, he should have focused on playing catcher.
I don't blame the injury on Dombrowski, just the poor decision making which hampered Swihart's progress.
That being said, blaming the injury on Dombrowski is no different than you blaming Wright's injury on Farrell.