It could be considered a type of networking. The group encourages members to become part of that help panel. The individual may not necessarily know the answer to your questions, but he can always put you in touch with someone who does. These days, every group has an Internet SIG because of the interest in that subject. The meetings have value because of the contribution of all the attendees, not because one of them knows everything.
Questions are vital, and as a group, solutions can be found.
There is also a beginners' topic. I enjoy presenting these. I feel that I benefit by preparing for a specific subject. My greatest satisfaction is when an experienced user tells me that I showed something that he did not know. And presenters are not experts, only people willing to share what they have learned with others.