As Icarus says, Domestically putting their names on a no go list is futile, as anyone can travel under the name of their choice, and just check in online!
However as Airtags has suggested, why dont the Airlines ask the Govt to flag their Passports for 10 years, no travel ex Aust as part of their penalty!
Such an action might send a message to their fellow Morons that this type of behaviour on an Aircraft will have consequences!