It's quite a stretch to make such an assumption, and I'm disappointed that it's /. front page worthy.
As a professional programmer, my weekend computing time is usually spent catching up on articles. I try to avoid thinking about work as much as possible, unless I get an "aha" moment, or a major issue comes up (which thankfully is rare).
I would imagine other possible explanations of this behavior to be:
1) People who are not professional programmers (e.g. sysadmins, tinkerers, etc...) prefer the languages that forgo things like compile steps, strict typing, etc...
2) People who are rapid prototyping ideas use scripting languages
3) People who are trying to get "home server open source projects" like photo apps, forums, etc... running or enhanced are asking the questions.
Not to say the scripting languages are bad, they definitely have a place, but IMO the maintainability and quality of languages like Java are far more important when your risking more than personal time.