Personally, I believe that a lot of companies are like this. I don't believe it is exclusive to Apple. Some companies are just like this. It is because everyone is qualified for the same job basically. Everyone is replaceable. From managers to supervisors. And I do believe this employee's account of it. I have worked in places like this before, and the toxic work environment is encouraged by the owners of the company. (I should say though I already don't like Apple because of their company philosophy. Don't get me started on that one. Read my tweets and you would know. This caused me to loose my page because I said they had been granted a patent they should never have. And I still believe so till this day.)
This is a link to the person's blog and full story:
Even though I know my work and I know that I'm incorporating textbook strategies in developing my story, still gives me goosebumps when what happens in my book happens to real people.