No, not really.
Or, at least, not obviously.
I can see making an argument that most LW users implicitly adopt a hedonistic model when thinking about stuff-people-value, even if they would explicitly reject such a model. I'm not sure that's true, but I'm not sure it's false either; certainly I find myself doing that sometimes when I don't pay attention. I don't think that's sufficient justification to declare hedonism a local consensus, but I suppose one could probably make that argument as well.