I am of the opinion that Trevor added no value to the show as host whatsoever. All the comedic value was a result of the writing, and a reasonably charismatic 5-year-old could have done the same job sitting in front of the camera and reading what was written.
That said, I stopped watching the show other than a few clips here and there a few months after he took over, so maybe he grew into it more that I realize.

My sister found a fancy restaurant in Japan called Pomme de Terre. I wonder if the owner has no idea what it means or if he gets a good chuckle out of people not realizing his fancy restaurant is just called "potato".

I am, it describes causing shock or dismay.

It's supposed to be appalling, it's an insult.