I think people are misunderstanding the title (which is not meant to be taken literally). They won't be removing the hashrocket ever, since (surely) they don't plan to limit hash keys to symbols only. The syntax only works in limited cases (namely symbols without spaces).

Which makes me wonder...why do it all if it is just for a limited case. Seems to make the code less understandable (to me) and it seems an unnecessary change to the language (to me).