Not really sure what you are trying to achieve here than to push your own personal viewpoints on things that you don't like? I mean, I could say something like "I'm always kind of surprised by people who want to move to the US because the lack of gun laws", and what does that achieve?
The previous post simply engaged the original with additional comments on why someone might not want to move to Australia. You could always counter with your own thoughts on the matter. This is a place to discuss ideas. The post hardly felt pushy to me, and I don’t understand the skepticism of the poster’s intentions.