That might be rational, but it’s highly unpopular with the 99% of people who don’t drive electric cars. This is virtue signaling,
Many good things are unpopular. Shutting down coal mining operations is unpopular with miners. Staying at home to avoid spreading a disease is unpopular, but we have to do it anyway because it's important.
Switching to EVs is important for slowing down climate change, and should be incentived (incentivised?).
What those 2 Australian states did translates directly into accelerated Climate change and Coastal cities sinking.