As someone who teaches females in middle school HTML/CSS this is very accurate. While the vast majority of them enjoy the course, when I survey them if they would continue learning to code they respond no more often than not.

Social stigma plays a large role at that age; this is also when they start thinking about boys and having self expression (clothes, music, books). It's _nerdy_ to be interested in computers. The know-it-all also becomes the outcast. That's the geek or loser. There's nothing more important than social status. It's really unfortunate.