Um, how can young people be 'aware of much of anything' before their time, as you say, if it all happened BEFORE we were born? I'm pretty sure even you weren't aware of things before YOUR time, only the things around your time, that are kind of old now to we 'young people.'
I admit, I never even heard of Edith Piaf until this film, but then again, she's French. Her music is French. I don't speak French, nor am I of a French racial background. So just cut us some slack, alright?