I don't work for Qatar so I won't comment on their cabin crew conditions as I am not knowledgeable regarding that.

However, regarding Johann Hari. Would this be the same Johann Hari that was fired from the Independent for making up quotes, forced to give back journalism awards and caught making edits to competitors wikipedia pages?

I am far from a Dubai cheerleader but that article you linked to has long been a discredited hatchet job.

Johann Hari - Wikipedia, the free encyclopedia