No they don't, that is completely a red herring.
> I'm envious of all the new things they're building with all their 'fake' growth.
We could have HSR also if we were willing to pay for it...if we thought it made sense to our economic growth. And the Chinese have taken out a lot of debt to pay for it, it wasn't free, and the only profitable line ATM is the one between Beijing and Shanghai. HSR might work out in the future, HSR might lead to economic growth, but these are bets like anything else.
I've taken HSR between Beijing and almost Guangzhou (my wife's hometown doesn't have an airport but has an HSR station). It was fairly empty much of the way during the 6 hour or so trip.