The bloke who told me has no particular axe to grind either way. Not an astronomer, not a footballer, and he doesn't seem to be the sort of bloke to tell porkies. Just a story he related to me when I was having one of my light pollution rants.
You may have read another thread on IIS about a football club that was shining
searchlights up into the sky.

Makes no sense to me either. Some people, commercial institutions in particular, just seem to have a "light" fetish.