Not being cynical, but I think it's more of I don't have the attention span to follow your demo and that's why it bores me. Demos tend to move at a slower pace

Not being cynical, but I think it's more of I don't have the attention span to follow your demo and that's why it bores me. Demos tend to move at a slower pace than what an average programmer goes through on their own so they probably run out of patience.