Speaking from the other side and as a very considerably less well known position than the famous authors you are all speaking about, I do lots of author talks and events and I find that the audience response really contributes to how things go. It's funny (for me) that people in audiences don't seem to realise that the speaker can see them right back! My favourite case was when talking to a largish group I noticed that a person in the back row had a telescope trained on me! Otherwise, there are furtive nose pickers, snoozers, ill advised wigs and so much more!
But generally, the atmosphere generated can be so warm and friendly that author events are some of my favourite things.
Maybe the OP's writer doesn't like doing events but had been forced into it by his/her publisher?