re: Why does Ann Coulter act like this?

Well there were numerous other mostly now-proven illegitimate reasons/excuses/bases for the investigation, as we now know.

But as for the Holt interview, specifically, I still say the negative fallout from that was mostly made so by manipulation and referencing things out of context by Dems and media. Trump's main error there was not expounding just a little more, but it's also quite possible that he couldn't much do so at the time for classification reasons.

I guess I would agree that he walked into that on his own, but even just a relatively small amount of self research on the part of the average person at home would have given a clearer picture of what Trump's qualms with Comey were. And they certainly weren't unfounded.