I worked at Apple for more than 10 years in various roles (have the Glass apple). Some of them were a grind, some were awesome, overall it was great and I'd do many the jobs again. A ton of the people I worked with were sharp, interesting, and entertaining. The corporate culture is generally fun, the pay could be better, but the stock options and stock purchase plan made up for it, the benefits are excellent, the food is awesome, and the campuses are generally pretty nice (some are great, some are merely good).
The culture is strongly one of not talking about working at Apple while employed so not many people will discuss it online, especially if they like their jobs. The culture of secrecy is one of those things that I never was bothered by, since it's just the norm.
Some orgs. are much better to work for than others, with around ten thousand employees in hundreds of teams, there's not many ways to reasonably generalize about what it's like to work there - different jobs can result in incredibly different experiences. The guy in the article was an AppleCare program manager dealing with OSV support centers, a job I'd never sign up for ever, since it's a corporate grind that's inherently tied to interdepartmental politics and squabbling with OSVs.