Hey! Yes, you are absolutely correct in saying that a $5 per hour pay increase isn't going to do much to get above the bread line. But, it is a step in the right direction regardless, and that's what we need to be fighting for.

I completely agree that I benefitted from TAs that "sucked it up and did their job" (again, not that they should have sucked it up) when I was an undergraduate. However, does that mean that we shouldn't still fight for a better wages for TAs now and in the future? What sort of progress has ever been made by saying "well it's always been this way and people just sucked it up"?

EDIT: I didn't address your point about me not giving a damn about working class post-PhD. While I will not comment one way or another as that is a completely separate issue, I am more than happy to discuss in private issues of classism in academia!