But as I've argued, having elements of capitalism like commodity production (and the subsequent export of these commodities) does not make China capitalist by themselves, which is also the original point I was making, that China has not "turned" to capitalism* like OP might have implied.

Markets are not inherently capitalist, and these capitalist elements in China allow them to build their productive forces which are required to achieve socialism, they're also the same commodities they build for the Belt and Road initiative, for example 😁

Capitalism can be summed up in many ways, and one of them is production for the sake of finding a market and making money. There is capital in China (in the marxist definition) and people can make money, but while these capitalist want to simply make more money, for the Chinese government the goal is to build up production and achieve socialism, hence why the superstructure of China vs. any country in the imperial core is different. In the first case (capitalism) we'll just keep producing and creating markets infinitely, the "anarchy of production and socialisation of labour", and in the second case they're using some methods (with the consequences that come with it -> if you make a factory to produce stuff, you will have to find a market to buy that stuff so you can produce more stuff) as a stepping stone until they don't need to any more.

Of course the superstructure is predicated on the base, and in China for example land is leased to businesses, but never sold, and the government can take back their property at any time, including whatever is on it. It's fundamentally different to capitalism in the west.