"According to the ABF website, the MAL is for non-citizens. According to a 2013 audit, there were only 172 Australian citizens on the list at that time. What accords me this rare honour, I do not know."
There are far more than 172 Australian dual nationals.
He's referring to the number of people(with dual australian/whichever citizenship) being on the 'Movement Alert List', meaning being on the shitlist of the ABF.
I understood that's what Handmer means. I pointed out he can't be on the list simply "Because [he's] a dual citizen", as almost no dual citizens are on the list.
"According to the ABF website, the MAL is for non-citizens. According to a 2013 audit, there were only 172 Australian citizens on the list at that time. What accords me this rare honour, I do not know."
There are far more than 172 Australian dual nationals.