Yes, they should be providing more updates for the people who might buy it. I think the backer-only updates were listed as features since that was presumably one of the big draws of the doublefine kickstarter success.
But RPS: do some journalism and ask someone who did back it? Or email the project? For a story titled "where are they now", having half the entries be "they protected updates so dunno, lol" is annoying.