You’ve got one of the best union contracts out there, with great wages and benefits. Great wages and benefits that came about from union members long before you fighting management over decades for those bennies.
Until you’ve actually volunteered your time being in bargaining sessions... bored, frustrated, pissed off, etc for months and months at a time I wouldn’t be too hard on your leadership. And sometimes, the quid pro quo can be just the other side agreeing not to go after something even more valuable.
Each Contract is just a single battle in the long war and sometimes you just have to decide which issue is currently worth falling on your sword for...