Sure. To poke at what originated this little discussion, though, wareyin would be far more likely to dispute that than I, given the nature of how wareyin's been trying hard to cut all credit for the work done by progressives out of the picture completely.
Traitor? That's making a couple questionable assumptions, I think. Progressives not all being wildly and blindly enthusiastic about what's expected to come and trying to fight to move things closer to where we think they need to be? That, on the other hand, is something of a given.
To some degree, I agree with you, in that sometimes, things get carried too far. On the other hand, having standards that one actually abides by tends to be of very great value, too, in a larger sense than immediate political points. I'm certainly in favor of working to have more reasonable polite discussion about where the standards actually should be, of course, when such can be done in good faith.