Collapse hasn't been the suggestion in fact. That's a straw premise to distract from the negative claims (which are supported by persistently bad economic data).

The US didn't collapse due to the great depression either.

What is being suggested, is that China is facing a very bad economic stretch as a result of their extraordinarily poor command economy choices.

Beijing's fabled (supposed) long-term thinking has shown itself to be a complete fraud. The Emperor, Xi, is wearing no clothes, as is the case with all dictators. An economy the scale and complexity of China's can't be run effectively with an authoritarian command approach. We have been seeing the proof of that increasingly since the great recession hit, wherein China switched to forever stimulus & debt fakery to prop up their flagging economy. In the span of a decade China became the most indebted nation in world history, while their growth sank below that of the US (which is a very mature, slower growth economy). And now the imploding demographics are setting in hard and fast, while the affluent world shuns China (leaving them with key partners like Russia, Iran, North Korea).

It's quite obvious that while China kicked the can down the road for a long time, the cost of doing so just keeps increasing in the form of negatives on their economy.