IMO, her comment on singers and actors is painted with a broad brush. Many singers and actors are capable of doing exactly what their title suggests, often in a live setting. (No digital edits etc). Yes most use sex appeal and looks to help (or entirely) sell their product but then so do some folks like Cactus Club servers, mobile auto insurance girls, and female dental hygenists. Actors-singers are often highly intelligent people with varied interests and diverse skills. Re: "...dream of growing up to be...". So pipefitter is a lowly occupation in her mind? (No I'm not a pipe fitter. That topic's for another thread. Haha)
Maybe I'm missing the sarcasm in her article, or, she's simply replying in kind to ignorant "broad brushed" statements made to her?