First, it demonstrates that the people who made this weapon had access to mastodon bone as a raw material.

That access could have been obtained in several ways: from animals that died naturally and whose bones were available for processing; from previous successful hunts; from scavenged carcasses.

The fact that the weapon was made from mastodon bone — not from the bone of smaller, more easily obtained animals — suggests a familiarity with large proboscidean material and a level of technological knowledge about how to work dense, thick cortical bone into a functional projectile tip.

Second, it demonstrates a specific technological choice.