Thank you for the link.
Unfortunately, I have never once seen ANY wire sold to cake decorators as FOOD SAFE WIRE here in the US. The cake supply stores in my city sell regular floral wire.
I appreciate this paragraph, taken from the link you provided:
"The wire used is a wire that has been specifically manufactured for the purpose of CAKE DECORATING. ie. Flower Wire (NOT hardware store wire or scrapbooking wire - it must be wire that is specifically designed for Cake Decorating)."
This is so true. Simply because a wire is made of copper or stainless steel does not necessarily mean that it is pure copper or SS. It may have other metals in it that would render the wire unsafe.
I'm erring on the side of caution and not exposing my friends, family, and clients to ANY wire. Straws, posey picks, flower spikes, and lollipop sticks are all easy, inexpensive, and safe alternatives.