I identify myself as a serial complainer versus Skyteam in general, and Delta and Air France in particular.
It does not seems to me that both these companies has taken that as a bad thing. I now have an identified person on Delta side, to which I can write my complains. I seldom request compensation, but rather point out the poor services. I do not hesitate also to mention the good points.

On the Air France side, unfortunately, I do not think that the same person is handling my various letters. It is not rare to receive two different answers for just one question. I received also a phone call last year from an Air France guy that was not aware that the case was solved. I do not see how they could put a label on a complainer in this case....

My opinion is that if Istrongly think that the airline is wrong, I do not request compensation. I just request improvement.
If no answer, I reiterate.
If nothing happen then, it is time for requesting compensation. That is a way to force the company to do something if they are not able to solve the issue differently.

We do not want money, we want service.
If they tell us: sorry, we wil never be able to provide you with this service, then, OK, the answer (my answer is): you owe me some money.