May I remind you of the thread at the top of the forum page:
Notice regarding post responsibility and anonymity
NOTICE: You are responsible for the content you post. This is a public forum. Treat it as if you are speaking in a crowded room. Recent high-profile defamation events illustrate that there are ways in which third parties can force personal data, including contents of personal messages, to be released by bulletin board owners. Be careful - libelous/defamatory posts can and have landed members in legal hot water. PPRuNe will not guarantee your anonymity in such situations.
This doesn't mean that you cannot freely discuss this incident - just that you should do so with this awareness.
I hold no brief for Qatar Airways, in fact, the reverse. I hold them in contempt and refuse to fly with them. Sadly, I doubt this keeps them awake at night.