Nonsense. Landsat 8 bands 5, 6, and 7 are infrared bands (5 is NIR, and 6 & 7 are shortwave or SWIR), and bands 10 and 11 are lower-resolution thermal infrared (TIRS).
I think what they meant is prior to the "digital farming revolution" if you called up a satellite/arial imagery company and requested anything other than visible spectrum, you'd not only get some strange looks - they'd also alert the government.
