I doesn't have to be 'girls'. So,e venues already use children (bit like football teams do).
Pretty male models appear occasionally too.
So if part of a mixed diet IYSWIM, then that's OK. But as some tracks do it as routine, and it's a throwback to the old 'dolly birds' days, then yes it needs to be cut out totally for a while. And perhaps the tracks that use children/juniors should be hailed as having the better approach.