I do recognise that chair moire to human vision issue, seen it many times with my own eyes. I think the furniture needed moving around before he shot it :) Natural moire or camera moire? I suspect natural as there are a lot of other fine details, fabric, hair, pool cloth for example and zero moire or false detail there.
The footage - when I play in Chrome to get around a strange compression issue with Vimeo - looks absolutely fantastic on my Epson theatre projector and Dell U2711 2.5K screen. And it isn't even the full 2.5K raw but ProRes. Camera is shaping up great.
In my opinion - the REAL advantage of a full frame sensor = more dynamic range. Not unmanageable shallow focus.
This thing has heaps of dynamic range so the sensor size doesn't concern me in the least.