I hear you on this. It's just that I saw how nasty these "glass" arguments can get. Heck, I was stupid enough on that website to actually participate!
Now, what's really interesting to me about ineffableting's shot is that, given the angle of the Sun (e.g. the shadows of the sign's framework against the facade), the flags are actually backlit to the shooter!
Yet the highlights and tonality etc. are wonderfulyl balanced.