As long as the flight was in conditions which met the new ash criteria I am not surprised he was dismissed as it comes over as trouble making more than safty issues.
What if the flight was supposed to take place through airspace that didn't meet those criteria? As I said in my post above, not all countries closed their airspace but left this to operators and pilots to decide.
Would you still say this is trouble making?
Even though you are probably right in saying there hasn't been a loss of life, but what option do you have when you have bulletins from the manufacturers with established criteria, and they say it's not safe to pass through a higher than certain concentration? Do you have better knowledge than them? Do you go below a minimum because you know better?
?