Don't know why you're getting downvoted, but I linked to a lot more than articles about local debt. Perhaps you could refute the OECD long term forecast that predicts a plateau rather than setting up a straw man about business insider articles.

By the way, I'm not even saying that China won't overtake the US economy sometime this century, I'm saying that naive extrapolation based on current growth rates is a terrible way to predict the future.