On WXTU, Philly, I heard another song, male artist, who, despite a thick Southern accent, talked about how bummed he was when "his Flyers" lost. Or maybe it was "his Eagles".
As if.
Taylor Swift is actually from the greater Philly area, so it works for her, but it does sound ludicrous otherwise.
As a singer and songwriter too, I have to say that "radio" is a far more singable word than a mouthful of call letters, especially Ws!
Regarding "cleaned-up" lyrics, it's no different than movies laundered for TV.
Frankly, a local reference or a surprise euphemism is about the only thing that makes people pay close attention to lyrics anymore.