Bakadata updated their spoilers with more parts and it basically confirms that Big Mom can control the ocean. She's such an op character...http://www.bakadata.com/manga-spoiler/one-piece-880-spoiler
It would be boring if they didn't glorify those things. Plus, I think the idea, Japan is perfect, is usually created by people living outside the country and Japanese would laugh so hard if they knew those imaginations.
My favorite one is Psycho-pass. I don't think people actually overrated AOT, as its animation, plot and soundtrack are all top level; however, I do agree there are other anime have as good or even better quality tho.