The reality is that quite often the student will first excel technically in the scales before the songs. This can be quite frustrating. However, with patience and practice the transition from technical proficiency in scales to songs starts to happen, and the benefits are huge.
The primary goal when studying ANY vocal technique should be that the technique developed can be translated into songs. I have a simple saying when it comes to voice technique verses style – a singers technical skills should ALWAYS serve the style they want to sing. But, if a singers style is masking a lack of technical skills then the singer is always limited.
Admittedly there are many modern styles of music where great vocal technique is not “stylistically appropriate”. But does this mean that vocalists who perform those styles should abandon developing their voices? I shout loudly NO!! One of the best things about studying vocal technique is that it gives the singer a platform to build on, or as I usually put it “home base”. A place of comfort for the voice to find a natural balance.