I'm definitely an "old school" adventure gamer, yet not a single point in the post was remotely close enough to the truth for me to be tickled by humor, I'm sorry to say.
Additionally, it's not an American subculture - these games have collected loyal fans from around the world. I'm in Australia myself, and the old adventure games were a big part of my life.
Something very special happened in the golden age of point and click adventure games, and it's something that certain people deem worthy of keeping alive. That doesn't mean they're all ignorant fools, even if some of them do whinge on forums from time to time.