Bullshit. They keep the standard of living for a select minority, while actually prohibiting investments and new jobs in France. For all of those who fight to keep their specific standard of living, others lose their jobs. And yes, 2 more hours of work wont make a impact on your wage bill. But it might help you actually keeping your job. Tell me, why would any foreign investor, right now, chose France above Germany or Poland? Where the workforce is equally, or even more skilled, but you get far more value for any buck you pay? While in Germany, you even pay those people more than you would pay them in France but it STILL makes economical sense for you?
This isn't about compromising workers rights. This is about being sensible.
For example, in 2009, our local (world leading) car lighting manufacturer was obviously hit hard by the economic crisis. So they went to the unions and said, guys, we can't keep our work force as it is. We don't make enough money as of now. The unions could have protested and they would have lost, probably damaging the company even further in the process, making even more job loss likely.
But they company said: look, we don't want to do this. Do you have a proposal? And so unions and the company worked together and devised a plan where parts of the work force, in something like a 3 month shift system, were put either on part time or even put off work completely for half the money. This was to be revised after a year and put out of action if the company would have recovered. It didn't within that year, but after a revised, 12 months plan the year after that. Everything went back to normal, nobody lost their jobs. In exchange for that, the company signed a contract ensuring the employment of the plants workforce for the next 5 years.
That's how you do things. That's how you help the people you stand for as a union and how you help the economy and your company just as much. Everybody does their part in ensuring the company survives and everybody keeps their job.