Many rebbeim ARE worth what they get paid.
I don’t mean to make a snarky remark here, but the discussion is about rebbeim who are not getting paid, so your comment is out of place. 🙂
I agree with you- rebbeim deserve to be paid a decent salary, certainly enough to encourage men of talent to apply. I think rebbeim get salaries+benefits that are reasonable commensurate with the job they have to do, while not being too high (which would also attract the wrong people for the job).
The point here is that they are not getting paid what they were promised – regardless of what you or I think they deserve. In this case they should do something about it- walking out may be a good option, as it frees up their time to earn at least some money to live on.