I was a professional cyclist for years. I did testing and development for one of the world's best carbon bike manufacturers. I have broken carbon bikes. There are a lot of things made out of carbon that I refused to use on my bikes: primarily bars and stems. That said, I have never seen a well made carbon bike just fail catastrophically.
That said, reading the article, the lady bought a 5 year old bike that could have seen all kinds of use, abuse (could it have been on a roof rack and driven into a garage) and the fork (not the bike frame but the fork) broke at some point. The article didn't specify where it broke - was it the crown? The steerer tube? Did one of the legs shear? - but I take a lot of that with a grain of salt. When you buy a used bike anything could have happened to it and it's vitally important to check it over thoroughly.
Regarding motorcycles, there is a lot that I wouldn't use carbon fiber for. Carbon frames and swingarms are unlikely to have sudden, catastrophic failures but wheels, clip ons, and other things could go bad in a hurry and at motorcycle speeds, that's something to think about.
And just to be perfectly transparent here, knowing that I am still considering getting some BST wheels for a couple of my bikes.