Many major issues regarding security,filesystem keep cropping up(there are a couple of links in the article). The idea is that instead of spending time and effo

Many major issues regarding security,filesystem keep cropping up(there are a couple of links in the article). The idea is that instead of spending time and effort trying to maintain the OS, they can instead use the battle tested linux and focus exclusively on the distinguishing features. And this will hopefully enable Apple to focus on the issues in the userspace.