He's right. The Ts and Cs in the industry are steadily drifting downwards and Emirates is no exception. You may well have thought that that your QOL was guaranteed when you joined the company but many might see that assumption as somewhat optimistic. As for selling up back home and committing your family to all the pros (yes, there are some) and cons of life in the desert, well we're all big boys and girls and have to live the consequences of our decisions.
It has to be said that some EK pilots do come across as a bit whiney and institutionalised when they complain about every perceived injustice by the great benefactor. Just remember you're probably still better remunerated than you would be elsewhere and if you can avoid p!ssing it all up the wall to keep up with the Al Jones's you might have something to show for it when you finally get back to civilisation. I'm pretty sure Emirates was the most I'm ever going to paid for operating an aeroplane.
'If you don't like it, leave' may seem harsh but in a non-unionised, hard-nosed commercial organisation it really is your only option.