I don't mean to diminish the accomplishments or skill of backgammon players, but in my opinion being an imperfect information game makes backgammon, like poker, much less interesting.

It means that, in principle, it is simply a matter of running Minimax over all possible distributions on a sufficiently powerful computer, and the game can be solved. I do mean 'in principle': actually doing this is still well beyond the world's computational capabilities, though this doesn't stop computers playing stronger than any human.