true but then again the US is letting private enterprise develop platforms that utilize the same techniques and technologies. The dream chaser for example.
the key weakness for the Chinese program is that same one that has plagued all there aerospace industry. Engines.
Actually, engines may be less of a problem than you think.
For one, a hypersonic glider shouldn't have engines in the first place, not in the traditional sense. It has flight control thrusters probably, but it has no propulsion per se. But it is vaulted into near space by an ICBM or rocket. From there the glider does just what its name suggests, it glides.
The other hypersonic engine we need to consider is of course air breathing hypersonic vehicles. However, the technologies for scramjets, ramjets and turbofans are quite different, and the former two is not exactly dependent on the other. It isn't like one must achieve a proficiency level in utilizing turbofans before being able to develop scramjets or ramjets.
Sure, turbofans may be used for a reusable, horizontal take off and landing hypersonic vehicle like the proposed SR-72 which uses a but even then you only need a competent turbofan to propel your aircraft to speeds where the dual mode ramjet takes over. I've even heard that they are thinking of using a turbofan like F100 or F110 as the low speed component. In that sense, even the current WS10A could work if china wanted to develop a similar vehicle.