his professional opinion
Why you think his is more professional than the IB-crew? He is just spreading rumours, nothing else.
Just by naming and blaming and so easily to identify a flightcrew from another airline, for me is just a sign that he is totally u n p r o f e s s i o n a l
If the Spaniards are the Cowboys, is he the self-made Sheriff or what?
Finally the aircraft took-off and landed safely. So, where is the problem.