Allen, do you really think it is gibberish? Maybe the weaker poems, but "Into the Dusk-Charged Air," my favorite Ashbery, is hardly gibberish. I think it is amazing and beautiful; there is a recording of his reading it and I was struck by how everyone laughed at the same line—a line that has no right to be funny but somehow is.
I don't understand Sam's poem. Ashbery never wrote a blank poem, and his mien is totally different from Cage's. I appreciate the work of both.