I also think intent counts for a lot with how severe the punishment meted out by chief and tribe is likely to be. Pike, like everyone else, has his occasional stumbles, but he rarely puts his desires ahead of the tribe's interests and he always means well -- Stubtail was an act of mercy, the hunt was for meat for the entire tribe and was at least started properly, the dreamberries were an accident, etc. Given that, it's easy for me to see how a chief could take a "these things happen, be more careful next time" attitude with Pike's antics.
Contrast that with Bearclaw's drinking or Skot and Krim going after their haunch of roasted deer. Those were entirely selfish actions which put the tribe at risk for no good reason at all and so warranted a much harsher reaction from the chief/tribe than anything Pike's ever done.