FWIW, I've been having an email exchange with Gilad Bracha - one of the sponsors of this thing who, as it turns out, is one of the creators of Strongtalk (bought by Sun and killed).
His explanation is that, yes this is lame, but you can't lead them out of the darkness all at once - you have to do it incrementally and this is one more step on the path.
His response:
"The JSR has been very well received - Java people love it. Only Smalltalkers complain."
But I wasn't complaining about his JSR - rather that its a bit of a bandaid on a sucking chest wound. And of course Java people love it - Java people love Java.