Even granting your numbers, you're measuring the wrong thing. Wilderness acreage and emissions trends are not ecosystem health.

Citing a wilderness figure for developed countries is misleading. Most of it is ecologically vacant--second-growth and tree plantations sans apex predators, large herbivores, intact soil biota, etc. Tree cover is not a functioning ecosystem. Developed countries have exported their ecological destruction: the beef, soy, palm oil, and minerals driving habitat loss in the tropics get consumed in the same places where the domestic "wilderness" figures look great.

The Living Planet Index (actual wild vertebrate populations) is down 73% on average since 1970. North American bird populations are down ~3 billion over the same period. Terrestrial insect biomass shows steep decline in studied regions. None of that shows up in "how much undeveloped land exists" or "how many solar panels got installed."

China's solar buildout is great news for climate, but climate is one driver among several. Habitat fragmentation, pollution, and overfishing don't get solved by the energy transition. You can decarbonize the entire grid and still preside over a mass extinction.

Yet the UK has some of the worst biodiversity on the planet.

And in developing countries too. People may not realize that when there's no industrialization, people still need fuel. So they cut down tree that they could walk to. Just look at the pictures missionaries and travelers took in China a hundred years ago. Wherever there were people, there were only barren land. Heck, it was like that even in the early 80s in some places.

You do know that in china while renewables are 30-40% of installed capacity(how many GWh they can theoretically produce), they are a smaller portion of generated capacity because if inefficiency of grid, intermittency if sun and wind. They are a smaller ~9-10% of Total Energy consumed (which is much bigger pie including for e.g. gas cars, jet fuel, diesel etc), right?

They may be able to distribute all solar panels and wind turbines worldwide; in the end that is just tiny-potatoes good because those markets are not that big. But when it comes to getting to energy independence they are using an "all of the above" strategy to get there. Planetary catastrophy can take a back seat to socio-economic unrest due to less/no money and opportunities for people.

Too little too late. China's coal emissions declined last year by a whooping 0.3%... after decades of increasing. We should be already reducing emissions, not flattening the curve