Multi-tasking should never be as valued as concentration. It's concentration that gets work done. When you're able to focus, the best comes out. When you multi-task, something comes out, but it can't be your best all the time.
Want to see what concentration looks like? It looks like this, when a butterfly lands on your eyebrow while you're in the most important concert performance of your life.
Without concentration - which can be practiced - Yukie Ota doesn't get through this.
The practice of concentration renders distraction irrelevant.