I think a musician or singer with an open mind will pillage all sorts of sources to express themselves. Fusions have alwys moved the music onwards and sometimes new genres have emerged.
I choose mainly 'folk' idioms and work within them.. It is not a constrictive form and gives a disciplibe within which to learn how to sing and play but once adopted you have the freedom to move in your own way. I recon most artists go through a period of imitation and assimilation and , if lucky, learn from experienced musicians and others in their community to express the aspirations of that community.
All song and music expresses a world of imagination and we all dwell within an imagined mental world. It's when it becomes forced on people as a norm that it can become a vehicle for social control.
You are as free to become a Steamfolky as much as a Goth a Jazzer or a Rocker and your lifestyle may reflect that strongly and the genre will be as phony as Fakemusic but probably as valid..