that coming from an Australian who lives in a shit hole where people were forced to vax and locked up for extended periods of time is just funny as fck. You have no clue what you're talking about...
you're talking out of your behind, been living in VN for over 10 years and it's insane how much one can get away with... You would have to do something really stupid to get in trouble here and even then it's usually small money to make it go away.
Get elite visa prior to the 15th of September after which it becomes way more expensive. While what others say about work permit is true, reality is that if you're working remotely once a while then you will be fine just like tons of others who are doing it. Just don't talk about it so that th expat Nazis don't give you shit and for extra layer of security use a VPN.