I don't think you can just copy SpaceX's falcon 9 reusibility and landing just by wanting to do it. Even once you've got the basic system it takes years and years of iteration to make it better step by step. Only one company in the west has really done any of that, and if spacex wasn't around no one would believe it could be done.
I'm sure it can be done eventually by China though, they are just as smart as anyone else. Can they organize their scientific and engineering forces as well? Knowing it can be done is a huge help.
They've got a multiple PRC commercial companies with successfuly reusable tests. We'll know more in next few years. TLDR is state level "direction" to pursue reusable lauch + mega constellations only started last few years (probably saw value in UKR war). I think SpaceX tech is probably easier to copy vs military, once idea proven to work as you said, PRC pretty good at iterating and replicating, and scaling, provided there's reason for it, i.e. no idea how much payload demand outside of megaconstellations. US uniquely advantaged because they work with a lot of developed countries with their own launch needs that US provides. Some initial estimates for PRC mega constellation(s) is IIRC putting up 1500 before 2030, and 13000-26000 by 2035 to show the projected launch curve. Which TBF is like 30-40 rocket tier of demand. Question is if they find something to justify spamming magnitude more launch capabilities, and pertinent to this article, if they did, it's probably going to be weaponinizing space.
I'm sure it can be done eventually by China though, they are just as smart as anyone else. Can they organize their scientific and engineering forces as well? Knowing it can be done is a huge help.