Of course I agree with that, if it were a deliberate and false accusation.
There are a myriad of ways to attempt a coup, not all utilizing the military. Now, I'm not expert in US law but I suspect any effort, by any means, to change the government in ways other than that laid out by the US Constitution could be considered a coup and would be illegal. And that would include any effort to subvert the constitutionally laid out process for changing (or keeping) the President following an election.
Agreed!