The point is not just that he's blinded by the flag: He's boldly marching into the void, confident. "wrapped in the flag" is a great saying.
Worse than a void because a void is not necessarily bad. Walking “off a cliff” rarely ends well.
The position of the statue (notably the front foot) make it seem very much "walking unknowingly off the ledge of a tall pedestal" rather than marching into the void. I think there's a difference in that "marching into the void" can be seen as heroic, but unknowingly stepping off a ledge is generally seen as being stupid i.e. not using your senses to inform you about the world, but instead relying on nationalism (the flag) to guide you.
Imagine the torrent of wrath if it turned out to be the Palestinian flag.
> He's boldly marching into the void
into the void, or off the edge?
"off the edge" is a clear interpretation of the statue. "into the void" is a bit more of a stretch. IMHO.
But that's art for you. Everyone has their own take on it.