I had the same reaction. The disclaimer at the bottom doesn't mention AI, but I have a feeling this was generated from a prompt to consolidate the 24 human submissions into a single essay.

Tangentially, I really look forward to the day "Not X but Y" stops being so overused by LLMs. It's a valid and useful construction in a vacuum, one which we should be able to use, but its overuse has gone past semantic satiety into something like semantic emesis.