Yeah, and the radiation from closer supernovae (50 light years or less) doesn't fry everyone directly anyway. What it does is strip electrons off the air create a bunch of NOx in the upper atmosphere, which then destroys the ozone layer, causing a UV damage and collapse in the food chain.
It's a lousy "Out with a whimper" rather than a "bang" kind of mass extinction.
Betelgeuse would be one hell of a show. My fingers are crossed that she blows. (or more appropriately, did blow 600 years ago)
Although the odds of it happening in our lifetimes are steeply against it. This Cnet article is the only one really hyping the chance this could be a precursor event to a supernova. And there's dozens of reasons that could be causing the dimming, but have nothing to do with an imminent explosion. An overlap in the star's various variability cycles, an ejected shell of dust and gas dimming the star, or maybe we're seeing it eat one of it's orbiting planets. Also the star isn't very "round" more like a hot bulgy irregular little nebula about the size of Jupiter's orbit around our sun, with the various sides bubbling up and falling back. So it could just be a big "dent" or something on the side pointed to us making it appear dimmer too.