Kasey weighs in.

Kasey, I think individualism is also a side issue here. The poetic process is perennial because it is a response to the basic human experience shared by everyone.

You ask for an example of the "historical narrative of literary progress" : the dominant one for the 20th century is what I described in previous post. The avant-garde literary project is a subset of an ideology. It is this ideological narrative which short-circuits the necessary (though not sufficient!) subjectivity of the poetic process.