As far as I’m aware there isn’t a thriving jungle expedition scene in Victoria
You don't know what people actually use machetes for, but they look scary so lets make a snide comment suggesting there's no reason to have them. That's exactly the sort of knee jerk reaction which makes for dumb laws like this.
There's been this really cool news story recently about what people are using foraged mushrooms for, better ban doing that pronto because it's clearly dangerous and there's no chance anyone else is doing it safely...