I have - last I saw was China was building quite a few coal fired power stations, and despite it doing some things in the renewable energy space, its CO2 emissions have gone up considerably. Look at the graph. Whilst the US and Europe have been trending down since the 2000s, the trend is still heading way north thanks to China (and soon India).
If we go back to Kyoto what was said was if nothing is done to reduce CO2 emissions in the 2000s we are screwed, so what has been done is done or soon to be done IMO. Europe's and USA's CO2 reductions have been replaced by China, and that means given the 'emergency ditated into our brains back then' we are screwed if you believe in climate change. So this nonsense of Australia reducing CO2 emissions to 0% (given how small the contribution is) will do nothing (read again nothing) if you believe in climate change.
I note the new emergency day is sometime - kyoto was about falling CO2 by 2000or 2010 from recollection or doom and gloom - in the 2030s now just moves when targets are missed: https://www.carbonbrief.org/mapped-worlds-coal-power-plants
Then lets continue, LNG developments, in Oz are a little over 1% CO2 emisions are 'recorded' in Oz CO2 emissions despite been consumed in China. So if we stopped today LNG exports all that will happen is it will be substituted by coal (but here hope renewables, but China is building far more MW capacity based on coal than renewables btw) which means no net fall in global CO2 emissions.
And now we have India, its CO2 emissions are rising. If there was a so called global emergence as was said by Kyoto 1990 - given they were arguing reduction in global CO2 emisisions by early 2000s - or what is done is 'irreversible' well we have gone past it bluntly. So if it is a global emergency well you need to deal with the CO2 emissions of China and India, full stop.
And if the pollies, green groups and the rest don't want to deal with it, and population growth, then personally why bother. Economics will ultimately dictate the move, particularly as the costs come down and make renewables compete with traditional energy sources (EVs, renewables etc) which is what is happening now. For a country with resources we are pretty stupid in maximising benefits to ourselves.
And finally, need look at CO2 from a life cycle perspective in a production process. Given the energy requirements of EVs (hydroxide), yes whilst when you drive them around they produce so far far less emissions than ICE vehicles, those figures become less impressive when you realise the electricity needs in producing (the batteries in) EVs themselves compared to ICE vehicles (or solar panels etc etc etc).
And economics itself will reduce coal use in electricity generation - you do that by ensuring coal doesn't achieve its 80% load factors in power generation by getting more renewables into the system. It is starting to happen in some places - see link above.
