I don't think we disagree there. I said it was 1% related to the World Congress, in that Polynesia might be the first to contact all other civilizations and thus might have an extra delegate in the first Congress (something that has spawned a few threads here, some might even have included the words "game breaking").
The main implicit benefit in BNW for Polynesia is that they can earlier establish sea trade routes over Ocean.
Of course they also have an explicit new benefit in BNW (which I forgot about because Polynesia seemed to be listed with civs that get an implicit benefit), and that is that the Hotel returns half of the Moai culture as tourism.
One simply does not disagree, even a little bit, with MadDjinn.
