Most of those celebrity nude pictures were gathered through the be use of social engineering more than anything else and involved more than iCloud. Again more of a mountain being made out of a mole hill.That's why I stress the word reliability among the clouds offerings of google, amazon, and apple.
If the outages are common with a just several month time interval per year as experience by icloud that only shows the poor reliability of iclouds.
Of course google have issue of hacking (aided by chinese government resources), but not as scandalous as this celebrity nude pictures.