"Dangerous" and "damaging" and "burning" are purposely selecting awfully strong, even disingenuous, words for whatever is going on; the article only gives evidence that the anodizing dye on a heat spreader has lightened/discolored. This is probably a combination of the amount of UV that comes off of modern blue superbright LEDs and a crummy dye that easily fades. If you don't want your anodized aluminum to do this, you paint a clear coat on it.
There doesn't appear to be any evidence for anything outside of cosmetic damage. This is about as overblown as it can get.
You know, I had never considered blue led’s giving off UV light. Tangentially related is that some cheap plasma globes can also throw off significant amounts of UV as well.
Out of curiosity, anyone here have recommendations for a UV specific meter?
There doesn't appear to be any evidence for anything outside of cosmetic damage. This is about as overblown as it can get.