According to a post twelve years ago when he refers to having already been there 9 years Pixy seems eminently well qualified to post on how things have changed. The direction is one way. Pilots have become a commodity with as the textbooks say price transparency.
However the discrepancy he highlights also occurs across many airlines. Emirates A330 fleet is similar to the short haul fleet of many national carriers. With seniority people people normally have more choices.
Just to be fair there are also some benefits on the junior fleets, e.g. less jet lag more time at home, faster progression to the left seat, becoming a trainer etc.
Emirates is interesting because of its scale. Pan Am of course spanned the world, but was a much smaller airline. But even with their 'catch me if you can' lifestyle the pilots all tended to look a lot older then they were. It would be interesting to see a study of life expectancies and what effect our worsening conditions are having.