I like to think these people, primitive as they were, took some pride in the craftsmanship shown by their weapons and tools.
I choose to believe that Og who was good at making points but not at making shafts traded with Grf who made great shafts but lousy points: for a certain amount of the passage of the Bright Thing from when it returns Og will sharpen Grf’s points, while in turn Grf will straighten Og’s shafts.
Then they contract with some distributor tribe to offer their sharpened sticks to outliers in return for colorful, glowy seashells they say they get from giants like anyone would buy that.
The Outliers are obviously in league with the bad spirits who cause babies to die and take life from the Old Ones. Some day Og and Grf will stop selling them spears and they’ll invade their land with new, improved spears tipped with sharpened bits of the seashells they get from them. Then they’ll control the seashell supply and no one else will get any weaponized seashell products.
These people weren’t just savages in competition for the meager resources they could find lying about – these people were entrepreneurs, dammit!