It's an interesting concept - the idea that the universe is entirely value free, and that all outcomes are of equivalent value. It's interesting because even though it's quite a popular idea among materialists who think seriously about their beliefs, it's also something to which people pay lip service, and then ignore. Do the materialists on JREF really think that it doesn't actually matter if they, say, smash a child's head with a hammer? Or that it only matters subject to some consequence that we wish to avoid? I don't think so.
However, it's reasonable to say - OK, maybe human beings are unable to come to terms with the rational world, in practice. We can logically show that value has no meaning, and that there is no outcome that is better than any other outcome - but our evolutionary drives prevent us from accepting this emotionally.
This just about hangs together in a schizoid kind of way. The materialist can thus live a normal life, assigning value wherever he likes, while at the same time adding in parenthesis that this is simply a pragmatic choice in order to achieve certain aims - these aims being arbitrary and of equivalent value to any other aims that anyone else might choose.
Except... value in the universe is not something that is just made up. It's something we directly experience. I know that different outcomes have different value - because they have different value to me. We understand value before we understand anything else. A baby realises that {being fed} and ~{being fed} are not states of equal value. It knows that before it understands what the universe is, and asserts its contention, quite noisily. Parents learn quickly that the values of the baby overlap with their own values, and cannot be considered in isolation.
Knowing that the universe is not, in face, value-free, may present problems for materialism. It doesn't have any issues for science, which deals with different things in a different way.