The thread wasn't about being pissed, it was about his credibility as a HC. He's starting to develop a pattern of cutting out early. There's a reason companies are cautious about applicants who bounce from company to company every year or two.
It's his decision if he wants to be an opportunist, but if you know you're dealing with someone who's only out for #1 with no sense of loyalty, that knowledge will probably factor in to how/If you do business with them.