With one hand they give you a ruling that says that if an employer breaks labor law (and the DoL agrees to enforce it), card check gets a union instead of a union vote.

With the other they take away three years of work labor organizing through impossible hoops by breaking the strike of the railworkers, who got nothing to show for it.

What's the point of a union if you can't strike?

But they aren't really swayed, they are playing the good guys to prevent riots. The role they fill, regardless of how any democrat personally feels, is the role of the small concession to prevent riot. It's super helpful to capitalism to have a tiny outlet so that the major exploitation is ignored. It's only "better" when you obsess with the short term goals and can't see the projects over decades and across borders. Sometimes I get it, honestly, like I am never mad at comrades voting for the hope that trans and indigenous comrades aren't genocided. But it's just not good strategy to think about that decision for more than like 4 minutes a year because of the above stated functional argument.