There is no doubt that having a good or bad run with injuries makes a huge difference - whether they are Wallabies or not, you need consistency of combinations to get the most from a team. When there are big numbers out, there is little consistency week to week. It shows. Look at the Reds with only a run of injured 10s!!
Fatprop's point is a very salient one.
No excuse - you have a squad to battle the season, and coping with adversity is part of it.
But there is no doubt some teams are having a better run than others. It cannot be ignored as a factor.
I think Hawko is just wondering when / if the Tahs will get a golden season with few in the sick bay. That may have a lot to do with preparation / rotation / S&C etc...so reflects on the coaching and management, and rightly so.