Whatever. I'm just pointing out that it's not a death threat, which is what all the hand-wringers are claiming.
Some are arguing that it has been used as a death threat. In fact, that’s what caused Comey to delete it. Whether or not that’s true, I don’t know.
What I’m very sure is true is that Comey didn’t have that in mind when he posted this. He meant it in the way you’re saying: impeach him.
The idea that he would deliberately and knowingly make a death threat to POTUS or anybody else on social media is so preposterous that it could easily pass as satire.