As Boyd writes, UVC light at 254 nm "is an established 80-year-old technology that has been widely used in water disinfection, food decontamination, and the control of TB in hospitals and homeless shelters." It was starting to gain traction in the mid-20th century, but "fell out of fashion" as western societies adopted vaccines and antibiotics, opting to treat rather than prevent disease.

Or maybe, before the creation of UV LEDs in the last decade, it took huge mercury vapor lamps that took a fuckton of power and put out dangerous UV radiation as well as a bunch of heat?

Nah, obviously it's a conspiracy.

This article reads like it has an agenda.