I am fairly sure he was being sarcastic. This is most likely because he was trying to poke fun at the earlier comment about having better things to do than hanging around the hostess' desk. Originally when he mentioned what he had noticed hanging around the hostess' desk, he was most likely referring to times when he had an ADR/PS and was waiting for a table, thus "hanging around the hostess' desk" waiting for his name to be called and "people watching" in the interim, not hanging out there in lieu of Soarin' or the afternoon parade, as was insinuated earlier.
I certainly wouldn't spend my vacation pointing out the tacky, selfish, illegal or immoral habits of others, but sometimes you can't help but notice it. Very rarely would I take action beyond informing a CM, though.