Crowley would like to give him a heartfelt pep talk, but he's already at maximum levels of positive thought and encouraging others here. He's not even particularly invested in what they're talking about beyond a passing curiosity, so when he's handed a chance to talk about himself, of course he's going to take it!

"I am literally the King of Hell." He smiles at the Once-ler, indulgent and full of mirth. "I've made no secret of the fact that I'm a demon."

Of course he hasn't brought it up as much lately, settling nicely into a rhythm where enough people here know him that he doesn't have to be forthcoming just to preempt one Dean Winchester warning people not to talk to him. Still, there's no point in keeping a secret something that only makes him look worse if he isn't honest. Better an honest demon than a lying fake human, right?

"At least I don't think I have."