I think there are a few assumptions being made here. The only fact reported is a family arrived on a medical evacuation flight and where covid positive.
It was a patient transfer ( hospital to hospital ). I interpret that as an Australian repatriation, highly possible through some sort of medical insurance expats commonly have. The transfer was probably approved based on some unknown medical condition and they just happened to be covid positive.
I dont see any problem ? Why such a hysterical response?