That's how it came across to me. They think Trump is stupid.
The threat to physical security was surely odd. If he was talking about Ukraine's "National Security" (i.e. from Russia) why wouldn't he just say it plainly? It sounded barbed to me.
The curious thing is that Poroshenko is saying tapes were fabricated and described their release as part of a Kremlin-driven effort to “undermine bipartisan support of Ukraine in the United States.”
Anyone listening can tell the recordings are authentic and made from a recording device disguised as a flash drive on Poroshenko's end. A child can figure that out from the sounds. The Ukrainian's (Ukrainian or Russian as a first language) might not be able to tell if Biden and Kerry's voice are authentic but WE can and so can any voice recognition programs.
The other thing that struck me was how paralled it was to Schumer’s threat.
In both cases, it implies cooperative control of member(s) of the off-CONUS IC who would think nothing of poking Poroshenko with a poisoned umbrella.
The State department is looking a lot like [one of the?] a keystone.
Kansas, who doesn’t take ethics advice from criminals, has his work cut out for him.