His response to the recent developmentsNah, people really shouldn't be that trusting of what they say (remember the US hypersonic scientist hiring a hooker?).
Here is another perspective on US hypersonics:
Rough notes (auto translated):
Air Force:
ARRW: Cancelled, unable/problems with making the warhead.
HACM: Formerly HAWC (Hypersonic Air-breathing Weapon Concept), performance is poor (reaching 18,000 meters altitude, Mach 5.1), completely within traditional air defense interception capabilities, with performance similar to X51A over a decade ago, except for engine working time (240 seconds to 360 seconds). Therefore, the demand for HACM's performance over HAWC were increased by a lot, but expected service is first 2028, which may very likely be further delayed.
Army/Navy:
LHRW/CPS: Performance is "awkward" (different sizes and weights, desired by the Navy and Army), booster is difficult to develop (not successful in a single attempt yet), poor terminal guidance capabilities (not available in the first batch), research and development progress seems to be only around 30%, expected service quantity is also awkward, with 176 missiles costing one billion dollars each, and both Army and Navy vehicles/launchers are quite awkward.
And here is link to a very long podcast about this topic (much more in-depth/details) from the same person as above + TSTO as guest:
TL: DR:
Progress is nowhere as smooth or good as US military and related says about their hypersonic programs, not to mention, it is likely that even the final products, are essentially gonna still be qualitatively worse than what China currently has in service lol (美军高超的上限在追赶中国高超的下限).
EDIT:
While I haven't gone in-depth into their sources, but I personally trust them both and that they use proper sources (they have shown/done it before).
Basically making fun of people who believe in ARRW (like where is the confirmation of it not being cancelled any longer? Or when is it expected to enter service?), and that the recent development (talk) was basically the scientist at USAF asking for money lol (personally also think that is the case lol).