The posts are still there. Now, I can understand what you're saying about how being a steward can be thankless. However, it's either the people I represent or the way I do my job as a steward, but believe me, the thankless people have been few and far in between in the 4 or so years I've been a steward. Even some drivers who dislike what I do as a steward (for instance, enforce Article 17 by filing for those drivers to be paid for the time they work off the clock) still respect me as a steward and respect my opinion, to the point that they asked ME for advice on how to vote rather than ask their own driver steward...
Plenty of part-timers randomly tell me how much they appreciate me as a steward. I actually feel loved by the members there...hated by management, though.