Cool arrowhead. I wouldn't trust the idea that it was "ceremonial" though - it seems like that's always what anthropologists say when they don't understand something's original use.
Generally speaking, the older the point, the bigger the point - because the older the timeframe, the bigger the animals. There was a big, catastrophic loss of megafauna about 12,000 years ago in North America, but they didn't all instantly die off. There were pockets of mammoths and other big animals up to about 6,000 years ago, give or take a 1000, depending on the animal and the location.
Your point looks simply to be a big arrowhead, or a smaller atlatl point. It'd be like someone discovering a .375 H&H cartridge 5000 years from now for the first time, comparing it to all the .223 evidence they have, and saying the big one must be ceremonial.