A common myth that floats around is that training eliminates creativity.
Methinks this myth was thought up by someone who just was a bit afraid of doing the correct consistent work necessary.
Actually, vocal training increases one’s ability to emote, and in like manner there is an increase in creativity. With increased muscle movement and mental control there are tonal colors able to be accessed and utilized. With more tonal colors as well as an increased range and dynamics plus more ability to move around, one is able to do things one could never do before with the voice.
One’s imagination horizon is thus expanded and creativity is enhanced!