This idea is mind-blowing. Imagine humans surviving in nature without any of the technology we have today. There must have been a wealth of 'oral tradition' regarding plants, places, animals, and social norms. People must have been highly physically active, which naturally boosted their cognitive abilities. Social interaction must have been intense and tightly connected to survival.
When I think about all this I feel thrilled and comforted. Sometimes, I wish my life didn't revolve solely around abstract tasks and concepts.
To me this signifies the very core of society itself. Someone made this flute, meaning, they had the time to imagine and experiment. Meaning, they played a different role than hunters or foragers of food.
This was probably a gift to someone (concept of love / family) or some higher ups (strata / class in society)
And, the reason only a very small sample was found was because someone had the idea, tools and time to probably fashion one out of wood, as it may be more easily workable.