It's perfectly reasonable to be upset that some reforms have been watered down, but it's completely childish to argue that a good bill that will vastly improve the current system is worth scrapping simply because the left didn't get everything on its wish list. I've spent no small amount of time criticizing the Republican base for its stupid, immature, fantasy-land approach to governance, and the same message applies to the netroots in this case: Grow. Up.
(And, of course, Toby Ziegler has already said this better than I can, so I leave you with this! The best bit starts at 1:15.)
"And if you think demonizing people who are trying to govern responsibly is the way to protect our liberal base, then speaking as a liberal, go to bed, would you please?"