He is not endangering Australia's border security.
He is not endangering anyone!
The VAX does not stop infection .
Quit being stupid and supporting idiocy!
It has to do with border security - and, yes, he is endangering that. Apparently the legal issues surrounding that are too complicated for a lot of people to understand, but I do understand Australia's border security laws and policies. And this case does endanger them.
The core of Australia's border security is a simple principle. We decide who comes to our country and the conditions under which they arrive. We decide. On any grounds we like. Nobody else gets to tell us what to do in this regard.