there are 6 people in the room, but as I said, it does not mean that the 6 persons are all distracted. (by the way, the initial comment was implying that the question is coming from one of the 6 persons in the room, so at worst, it's 5 persons distracted)

the question can also be useful for one other person in the room, so instead of being distracted, the person has been helped.

No worries. Was just answering your question.

In my experience, the typical picnic table sized open-plan/hotdesk furniture usually seats six (three per long side) so, in practice, six people seems like the most common group sizing.