This is nothing new. Some time ago, I read an account of Richard Wagner insulting the great contralto Marianne Brandt - a student of the legendary Pauline Viardot-Garcia - after her onstage audition with full orchestra, denouncing her as 'ugly'. She ran from the theater, returning only when Viardot-Garcia demanded Wagner's public apology, which he gave. One wonders if Brandt could have the career today she had during her own era.
Men aren't immune to the desire for the body beautiful onstage either, as evidenced in blogs such as Barihunk, which extol beautiful voices in muscled bodies. But I wonder if a kind of body fascism is involved. I have only to remember my first fitting at The New York City Opera where I was told that I was hired because 1) I could sing 2) looked good and 3) fit the costume.
There's no business like show business.