Microsoft makes the fatal error here of
listening to what customers say and not what they are
saying.
They do this all the time and it's why their products tend to be train-wrecks, design by committee, functions by consensus, with little personality and zero fit and finish.
This logo is an abomination. It is the kind of thing a first year design student would come up with after a weekend bender and their assignment is due first thing Monday morning. It's a failing grade.
Microsoft has invested a lot in that "flag" and people know what it means because they've seen it glued to cash registers, ATMs, their notebook computers and desktops for more than ten years. It's iconic now.
To throw that out arbitrarily is reckless. Couldn't they hire a design firm with some credibility to adjust it, give it a bit more polish, take it in a slightly new direction, without trying to literally make it a window? It already says "Windows" so why repeat yourself?
I hope someone from the Metro team goes over to whomever did this and duct tapes them to a chair and forces them to hand-write an apology note in perfect Comic Sans.