There's posts elsewhere in the comment thread with concrete reasons. I'll horribly paraphrase them: the demographic collapse is less of a problem than westerners think because China has a high home ownership[0] rate and home-owning adults are way more likely to have children. Old people will just die alone and unloved in China like they do in Japan. China captures enough of the electronics value chain that existing 'derisking policies' practically amount to 'move final assembly to Mexico to evade tariffs.' They're nowhere close to being food dependent.

I'm not entirely convinced by this, of course. But it's important to note that headwinds are not brick walls. And even the inevitable next collapse of the Russian Empire will probably not happen for years, if ever. There are levels of survival that the elites who run sovereign states are willing to accept.

[0] On the timescales of normal family planning, the difference between home ownership and a ninety-nine year lease with no rent payment is immaterial.