Your link does not support your claim that post-modernists had an effect.

Fubarobfusco may have a point about boo lights, but this large thread you have spawned distracts from it and thus undercuts him. In the long run, praising postmodernists may be a good approach to diffusing boo lights, but if you want to do that, make a separate post. In the short term, doing so distracts from the point. Whether postmodernists said useful things is not relevant to whether they said what Eliezer attributes to them and is not relevant to how the audience reacts to that attribution.