Western consumers benefit from cheap products made by Chinese factories that have cheap labor and "negligible" environmental costs (i.e. factories don't need to pay to keep pollution to a minimum).

But yeah, you western consumer (I assume) point the finger at China, but when you're asked to pay more so your phone is made in a more environmentally-safe way, you'll balk and say "No way!". Maybe not you personally, but "you" the masses. Affordable flight to your next exotic country vacation vs sustainable vacation?

So the idea of environmental sustainability gets demolished the next time you pull out your wallet... meanwhile "China!", "India!".

And understandably, if these countries have to pay more so they can grow in a sustainable way, and they ask "Wouldn't it be fair if we ask the rich countries to pay for the past, where they grew in a ecologically destructive way?", the already rich countries reflexively say "No...".