It would be silly to throw all of these items at a new developer, and no teacher in their right mind would ever do that.
But if you're trying to pick up the language on your own...that's what you'll see.
> but do consider that if you're a new developer and you go
> a'Googling, you're going to encounter JRuby, and Rubinius, and
> Macruby.
1. Forcibly prevent people from developing new Ruby interpreters, Ruby frameworks, and alternatives to popular Ruby tools.
-- or --
2. Force Google to adopt a old-style Yahoo / DMoz approach to internet search so that a Google employee can sort/categorize all of these things manually for presentation to the user.
The crux of the article seems to be that too many choices can be overwhelming to a newbie, so we should restrict everyone's ability to choose so that inexperienced, new developers don't hurt themselves (or run screaming due to information overload / confusion).