Agreed. This is why I really, really hope Rubinius manages to become "worth it" soon (or at least JRuby). The MRI core team, Tenderlove excluded, seem to give approximately zero shits about Rails.
Ruby is much more than Rails and I think it's a little sad that a large portion of the developer population has no idea that Ruby exists outside of Rails.
i find it a little sad that the core people find it appropriate to ignore needs of a framework that brought the language from the obscurity it "enjoyed" for years to the front lines where it is now.
Your revisionist history is another thing that makes me angry. Ruby and Python were getting popular long before Rails and Django came on the scene so before you go running your mouth about core people ignoring the needs of people you should think long and hard about subverting the needs of an entire community just so you can develop another web app.