He didn't bring Heritage into it. He sourced a fact to a Heritage report, which turned out to be (surprise!) a fact. Please just stop talking about Heritage. An HN survival skill that has served me in good stead: just say "I was wrong, sorry." People will even upvote you for saying it, because it's so rare for a nerd to say it. You will be amazed how many pointless arguments those words get you out of.