Why? Why should the organizers care about the audience members' desire to "be heard"? Having something to say and saying something worth listening to are not

Why? Why should the organizers care about the audience members' desire to "be heard"? Having something to say and saying something worth listening to are not synonymous. The organizers' chief concern is putting on a good event. That requires having interesting talks with interesting questions. It does not require giving every Tom, Dick, and Harry a soapbox with which to draw attention to themselves.