however, the cost of having this provision in the constitution is fairly low in any case, so it's sensible to be a little bit careful.
Hey, I used to think the same but I read an article saying that 1 in 4 Australians is eligible for a dual citizenship, and it implied that if any of those 6+ million people were to stand for election, they'd have to formally renounce ties with that country (I haven't fact checked either of those claims, but it was in SMH)
I feel like the potential foreign influence concern is a bit unrealistic. If any dual citizens were to stand for election, its a reasonable assumption that either A) they wouldn't be standing for election for subversive reasons on behalf of another country because the long slog to elect one representative will probably have no effect / they'd be demonstrating preference for Australia with their residence and desire to represent, B) they'll get poor support because most people are understandably concerned about foreign influence, or C) they'd stand for election in an electorate largely representing Australians of similar cultural background, which would be a positive because there would presumably be no better person to balance the interests of Australia as a nation with awareness of the issues dealt with by the minority communities they represent.
That said, because it's a constitutional issue there's practically no chance of it ever being amended, so there isn't really any point debating it as much as letting it renew discussion about what it means to be an Australian