You are correct, but I should point out that Russia has described its Kinzhal missiles as hypersonic, when they are really more of a traditional ballistic missile fired horizontally. So very fast (Mach 10), but not as maneuverable as what the U.S. has been calling hypersonic.

Since the original story here does not provide many details, we can't know which side of that fence this falls on (assuming it is real).

Was there any evidence that the Kinzhals fired, for example, toward Kyiv during the current conflict were fired on a depressed trajectory? I remember reading one account that looked like a plain old interception of a ballistic missile. (which is impressive enough to someone who remembers when "Patriot missile" was not exactly synonymous with excellence)

Kinzhals being intercepted all the time could also be propaganda or missile defense having progressed more than publicly known.

It's not a great idea in war to assume your enemy is incompetent (even when they are).