As one of Ozark’s most beloved characters, the tragic end of Ruth’s story was as much a part of the series’ end as the Byrde’s survival.
Yet Ruth’s uncle’s song had a far deeper meaning than simply being a musical accompaniment to Ruth's last daydream.
Their belief in that “living” and the series ending with the Byrdes furthering their life of crime alludes to the idea that, like Ruth, the Byrdes will eventually find their living a hard way to go.