Not seen the ad yet but from some remarks here.
Daughter, as a flt Lt, was selected as SME logie in a Purple CPX. The Lt Col would not accept a junior RAF female and insisted on a more senior RAF type.
As it happens daughter had known the selected wg cdr for a number of years even before she joined the RAF. The wg cdr just let her get on with it - he was a nav not a logie.
Prejudice will be around for some time yet.