I certainly agree about the significance of Walt Disney. However, the banners and the logos just said "100 Years of Magic" -- not something that recognized Walt Disney's birth 100 years earlier. The banners could have said "Centennial Celebration of the Birth of Walt Disney, 1901." But they didn't.
"100 Years of Magic" came across as nothing more than a meaningless marketing slogan. At that time, Disney liked to change its slogan every year of two, just like hamburger chains.
Fortunately, the exhibit "Walt Disney, One Man's Dream" celebrated Walt Disney for guests who took the time to go there. And it's wonderful that the exhibit is still part of Disney's Hollywood Studies.
The huge steel structure has been demolished. You won't see it again.