Is it genuinely true that Beyonce's voice is average?

I think that really depends on who you ask and their level of vocal experience. Many people would strongly disagree with the statement that Beyoncé is just an average singer. She began singing when she was very young in a Montessori school.

She had first signed up for dance classes but her teacher was listening to her hum a song and noticed that she could hit very impressive high notes and sounded very pretty. From there she was in several different choirs in church and in her schools.

Vocal effects can make fairly average singers sound pretty good but you can not take someone who can not sing and expect auto tune to make them not only sound great but great enough to be a huge pop star.