I'm with you that I'm not sure how good of a GM he is (especially when he needed to fire O'Brien and didn't), but I don't think he makes a panic trade. If anything, he's shown himself to take the opposite approach.
While his options have been limited by the long-term contracts of mediocre players, I'm sure he's had opportunities to deal and has declined. He's pretty deliberate and seems to have a clear plan he will stick to, even if fans like me think he should be more aggressive to add talent and excitement. And, he's likely determined to avoid making another lopsided trade like the GS trade (whoever had final say so).