Earlier quoted context omitted.
He is a dual national now, which only complicates any attempt, Australia's connection with Five-eyes and other military and political arrangements aside.
When has that complicated anything? Being a dual citizen is a huge benefit everywhere on Earth. For anyone with enough resources and time I'd encourage collecting citizenships like they were Pokemon.
Care to elaborate? What kind of benefits one could get out of it? There's tons of information on topic from biased sources like law firms, but very little otherwise.