I confess to only skimming through this thread, but unfortunately in general it would appear that your desire to fly first and foremost, seems to be the root cause of your problems.
If the job you were going to choose was more mundane than the world of aviation, then I guess you would have been more critical of pay and conditions etc. at the outset.
The 'must fly' in the heart overules the logic of the head. Anyone entering this industry cannot help but see the problems that have existed in the industry for some considerable time. It is not a new problem. However, for many, being prepared to walk away from the excitment of flying seems to be too much for the heart to bear and therefore the logic of the head is over-ruled. Understand....you have now helped to propagate the problem.
If the difficulties of pay / conditions were resolved to your satisfation then I think a lot of us may never have ever afforded to learn to fly in the first place and there wouldn't be many students following eagerly (but also with rose tinted glasses) in your footsteps now. No students - no income - no experience - NO FLY!
It is inevitable that there will be organisations that are insufficiently funded and / or badly run with the consequence these are not good places to work, in which case the choice to stay or go is yours. But for those who supposedly entered the industry with eyes open (well you should have done, with what you were about to spend), whether to remain an instructor or to upgrade to the big toys, I think you have to accept that you spent your cash knowing what to expect and if you keep grumbling, you gonna become sad, bitter and twisted. And you are still part of the problem.
I am sure this post may upset one or two. It is not my intention, but it has to be said, that whingeing does not help. If you come to the conclusion you have made a bad career choice (and an awful financial investment), decide to either GO and get a job that has better pay and conditions but most likely without an avionics layout in front of you, or STAY in the industry and make the best of a bad job with a smile on your face.
Sincere wishes of good fortune to you either way.