Yes, and? I said that they hurt everybody's economy, not that everybody immediately starts reducing emissions. The US and other Western countries are in a very different position from China, it would be ridiculous to expect them to have the same reduction targets. I refer you back to what I was writing in my previous post about how obvious it is that the Chinese are definitely 'hurting their economy' as well with their approach to emission reduction.

I read that, yes. It's not sidestepping when the treaty itself says that the goals are non-binding.

Have you seen serious calculations comparing the estimated impact on every country of its Paris treaty targets? I'd be interested to see them. Frankly I don't know if the American targets are indeed disproportionate compared to those of other countries, they might be. I do know that such a comparison would be rather more complex than the points you've raised so far, though.