Blame Nebraskans. A list of some things invented
in Nebraska:
https://journalstar.com/news/state-and-regional/nebraska/12-things-invented-in-nebraska/collection_9317c5df-fcee-5a73-9891-6e4c1d3cabf7.html#anchor_item_5
Some big city type must've written this. There is no mention of
center pivots.