Yes, there's always plenty of energy with Paul, but it rarely seems genuine. It feels more like refocused contempt for the audience. I'm not a hater, and I don't think I'm projecting here, I just get a vibe from him like he doesn't really enjoy what he's doing. And it was disapoining to see him come up again when there are so many other funny people who have yet to be on, like:
I'm pretty sure you're projecting, although it is entirely possible that you are picking up on Mr. Tompkins' contempt for you specifically, and not for the audience at large.
With regards to your list of "funny people who have yet to be on": probably a third of those on the list are based on a different coast; at least two are based on a different continent; and two are network TV stars -- it should not surprise you when Howard and Kulap are unable to snap their fingers and make them materialize in the Earwolf Studios. Not to mention that everyone on that list is a successful comedy performer and/or writer, and are generally pretty busy performing and/or writing.
Also, one of those "funny people who have yet to be on" has, in fact, been on. I'll leave that one to you to figure out.