Does validation from the liberal establishment nullify the aims of these protests?

http://www.nytimes.com/2011/10/11/us/politics/wall-street-protests-gain-support-from-leading-democrats.html?_r=2&hp
For those interested in the Occupy Wall St agenda(s), this question might be important. It seems like there is a danger that some of the critical messages of the protest might be co-opted and caught in the tides of populist jargon. It seems as though the major objective for protesters is not to advocate for the extension of Dodd-Frank legislation but to inspire far more radical criticisms of our social, political and economic landscape. I'm curious.