UV light is radiation from the sun. Sun burns are, in fact, a form of radiation poisoning.
I'm sorry this isn't something you knew.
Also, be aware you are violating HN posting guidelines. I'm not going to interact with you further because you are just flaming.
While I don't agree with the previous poster's phrasing, this is disingenuous. It's like saying someone dying of heatstroke actually died of radiation poisoning due to the infrared radiation hitting them.
Radiation poisoning refers to ionizing radiation, not to anything that can be claimed to be radiated.