>They look for causes and solutions, not blame. They, as far as I know, pride themselves on this.

If the cause is a person's behavior, that is the same thing as blame. Look at the report of the Pinnacle 3701. Probable causes from [1]:

1. the pilots' unprofessional behavior, deviation from standard operating procedures, and poor airmanship;

2. the pilots' failure to prepare for an emergency landing in a timely manner, including communicating with air traffic controllers immediately after the emergency about the loss of both engines and the availability of landing sites;

3. the pilots' improper management of the double engine failure checklist

It's hard to look at that and say that the pilots weren't being blamed.

1. https://en.wikipedia.org/wiki/Pinnacle_Airlines_Flight_3701