Earlier quoted context omitted.
What monumental architecture is older than Göbekli Tepe?
That's a very different question than what I said. The word "monument" in archaeology denotes a mental relation between the human and the space modified by the structure. It's not something inherent to the structure itself. You can have structures that are monumental that we can't easily identify as such today (many burial mounds were like this), structures we see as monumental that the original inhabitants would not…
I think that suggests to me a greater level of sophistication for neolithic cultures than we give credit for in our current histories.