It's definitely the Lucky Country...my favorite place on earth...but it's not that lucky :)  When I'm in Oz or anywhere else in the region, I use an American Google voice number to get texts from things like Interactive Brokers that requires me to use 2FA for login. I'm too cheap to just have an American number active and sending me texts when I'm long term traveling overseas. Changing my number with people like IBKR to a foreign number would also work but it would raise all kinds of red flags and they would likely freeze my account until I picked a home country (which I'm not going to do).
 
Google Voice number is free, but you have to set up the number when you're in the US...and my experience is that Google is not fooled by VPN's.