They've seen what happens when a country goes from Communism to Democracy almost overnight (Russia anyone?). Do you think anyone wants to see that happen again? I'm sure environmental regulations will eventually take hold over there, it's just going to happen a lot slower since the government has total control over everything.
What would you suggest Arnie? That we suddenly stop buying things just because they say "Made in China"? Let me know how that works out for you.
I don't know about where you live, but there are places in the US that dispose of electronic waste properly. They don't all just ship it over to China to be dumped. And these places aren't hard to find either. I don't throw away very much electronics myself since I end up finding a use for everything. I think I even have an 8 year old computer around here somewhere. It may not be running, but it's not sitting in a landfill either.