Why would they even say that: "There are uncool people here, beware." Obviously not everyone in a workplace can be "cool" but I see no point mentioning it.
Because it's funny and implies that they don't take themselves too seriously?
A lot of workers are suffering from PTSD from abusive managers who were "uncool" and micromanaging the living hell out of them. I wouldn't call that funny. Not saying that's what's happening at Pabio but that was the first thought in my mind.
You won't find any abusive managers at Pabio... I'm just not very cool, that's it, I promise!
Agree with that statement once again.
Explain away social awkwardness/weird interactions? Cool would not be a word I associate with myself for that reason.