It's not a matter of being afraid of the Indonesians. After all, we have more than a million of them over here, legal and illegal. Another hundred or so won't make much difference. Everyone is entitled to seek a better life.
MAS pilots won't make your life difficult. But if I were a foreigner seeking employment with MAS I would be very wary of the way the toad and his cronies interpret the contract.
The grass may be greener on the other side of the fence because the soil is more fertile. It would serve you well, however, to note that the gardener uses human waste (read Local Pilots) to fertilize the land.