Well, the raspberry pi is already open source, so quoting or linking their documentation is already done. And if the small business was simply creating a “hat”

Well, the raspberry pi is already open source, so quoting or linking their documentation is already done. And if the small business was simply creating a “hat” of peripheral hardware that plugs into the pi, including a data sheet or BOM list is just a few mouse clicks in the cad software they’re using to design their PCB. This comment feels more like FUD than a realistic concern.