I would expect this in a job listing for a juggler at a circus, not for a desk job. This is a position for a knowledge worker—someone who "thinks" for a living.
Thinking to create value requires concentration. Concentration requires focus. Both require minimizing distraction both from internal sources (e.g. multitasking) and external (interruptions, distractions). That's just how the mind works most effectively.
In my personal knowledge and information management (PKIM) seminars and workshops, I teach that focus is what you shut in and concentration is what you shut out. These are essentials skills and powerful tools for any worker.
So why would you set up a work environment that makes these things more difficult?
I realize that the HR person who wrote (and misspelled) that description was probably only trying to cover themselves, but I see this all too often. It still makes me wonder: when will leadership and management get the fact that it takes concentration to create value?