One initiative doesn't make it a hub. If you found a startup in Holland, there are plenty of other cities which are suitable to found. The distances are sort of close, so the reasons why you HQ your startup in the valley are not exactly applicable to Amsterdam, you get the same benefits in most other big cities with talent.

You are right it is not a pissing contest, but you mention exactly what Americans (or other foreigners) would think. Most foreigners don't know much about Holland and see everything as a sub-urb of Amsterdam. They don't know where the local talent is, where the good universities are, where (local) people want to live. Don't forget that Dutch people think Amsterdam is as cool as foreigners do.

Don't take me wrong, Appsterdam is a cool initiative, but to me it sounds like something by foreigners, for foreigners.