I somehow feel like they are overly optimistic but could not find any proof to refute their point (talking about the current US election clearly did not help...). They are mostly upper middle class who worth more than me. So I guess they may be biased? However the taxi drivers seem to have the same view.
An anecdote: none of them want to immigrate (at least to US) and their only major concern seems to be the air quality. Since they can buy everything else from overseas anyway.