Yeah, this. If I were to do a dumb dick move like this, I'd much rather have the candidate call me out on it than blow me off. I'd be really excited to meet a candidate whose first real interaction with me is to tell me I'm being an asshole and be right about it.
I actually CC'd the CEO on my reply, wherein I basically implied that the previous email was misleading and that I was expecting a less formal mode of communication. But like someone else said, I don't think the CEO actually sent that first email. I suspect the recruiter sent it on his behalf.
