Like Oregon there is a certain lack of folks in long underwear in the state. Well, not counting the normal type of long underwear you have under your clothes. This stings a little in the pride of a state when something like State Heroes comes up. Everyone wants to be able to show something.
In Idaho's case it got even worse as a self proclaimed "Warrior of the Future" started taking billboard ads and radio spots to urge state legislators. The embarrassing part was that it was revealed he was a member of a white seperatist group. Things might have gotten even more embarrassing for the state except that a radio station began to air counter ads for Sasquatch to be called state hero. After all he has many qualities of a hero. No one knows where he is, or who he is, and certainly Sasquatch is strong. By turning it into a joke they defanged the Warrior of the future who slunk back to some stockade in the north of the state.
...and that's why Sasquatch is the State Hero of Idaho