There is a fairly common misconception amongst wannabe pilots that the purpose of the airline industry is to provide employment for pilots. This leads to comments like these from the petition:
We want to work, we need to work, we are JAA/EASA pilots.
It is extremely unfair for a pilot who won their "wings" are remitted to silence and unemployment
We are pilots who studied hard to have our wings and we will not accept this situation to continue
Aspiring pilots need to get their heads around the fact that airlines exist to sell seats to passengers and make profit for shareholders. Creating a finite amount of employment for pilots is merely a convenient side effect. Airlines can set any minimum requirements they like for their own business, and if every muppet pays for 500hrs training, airlines will set their minima at 1000hrs to achieve the same filtering of candidates.
You don't need petitions and government intervention here. You can achieve the same result simply by not signing up for dubious schemes from blacklisted third world airlines.
The uncomfortable effect is that some people would effectively chop themselves from the employment marketplace at an earlier stage. The alternative is doing the same having dropped a further 50K on a dodgy P2F scheme. Fewer pilots entering the profession is the best solution but too many refuse to realistically appraise their prospects when they can simply throw money at the problem and hope for the best.
Petitions like this and grumbling about unfairness will not actually create extra jobs.