Not that I have that keyboard myself (still quite happy with my Corsair K60) but raising your elbows is the correct posture for typing. I actually often don't do it but it's something you're meant to do to both improve typing accuracy and to reduce risk of RSI. Alllll of that said, I would also be pretty annoyed about a lack of feet on my keyboard as I always use them on mine.
The Zowie doesn't 'need' feet. It has a solid-base construction with rubber slip material that angles the keyboard at pretty much the exact same angle as all other market keyboards that have feet. It is not a flat keyboard because it is without feet.