I did not say a fan makes no noise. What I was saying is that you won’t have main and tail rotor and engine noise. Why multiply the noise by twelve? The ones in the link have two rotors.
As for landing sites, there are plenty of places around. Think of the number of sporting grounds that get no use during the week. If the demand is there, the infrastructure will become available.
Don’t look at the future through the prism of a Sydney centric, CASA biased nation. Remember, one hundred and twenty years ago freeways weren’t needed and horseless carriages were for the wealthy.