Well said Scroggs! All the time there are more pilots than vacancies, Airlines can afford to be picky and make their own rules and conditions for applicants. It doesn't matter whether whether or not you think it's fair. If you get a job, you'll say it's okay, if you don't you won't. It's tough cheese really.
I would suggest that instead of trying to buck the system, you start to play the game. The airlines won't change, no matter how hard you complain so bite the bullet and get what they ask. If it means that much to you, you'll do it.
Yes, I do work for BACE (EMB-145) but it took me 10 years of effort to find a route to get me here. All I can say is it's worth it, even if the goal posts do move now and then. Chin's up and keep plugging away. I met a couple of chaps today doing their ATP conversions who had done 509 courses at Cabair/OATS in 97 and this is their first airline success, so it's not a guarantee doing a 509er.