I agree. We are talking about animals that will spend 95% - 99% of their time in their hides! Dragging them out into public to be gawked at (even to a rock concert based on one post regarding loud music) strikes me as cruel and quite simply taking advantage of their gentle and reclusive nature. I can see the value of the occasional educational and heavily controlled class room event but nothing beyond that.
These are sentient creatures, I am sure even though they do not outwardly show it they do get VERY frightened when dragged out into public, the fear of predators and such must be distressing.
The mental and physical well being of your animal should always take precedence over your own amusement.