Then again, I had a Davy Crockett "coonskin" hat when I was a kid. Wearing a dead rat on your head would look pretty silly in 2012.
The only reason, THE ONLY REASON, I would think about getting a hat like this is that many are questioning how long Luigi's Flying Tires will be around as a ride. It may have some collector's value at some point in the future. These things could have a future on EBay.