Are you proposing that "value" is meaningful in the absence of some perceiver? All value is the perception of value. The only difference is that it's easier to find people who value precious metals, but that sort of thing always depends on where you look. One can easily imagine situations where a position at the front of a queue is more valuable to the people nearby than a gold coin. Finding value in a blockchain is no different.

It's just that none of the blockchains have yet managed to situate themselves such that people are likely to value their effects. Instead they're focusing on scarcity, which is kind of silly because all of the competition is equally empowered to create artificial scarcities. I think they'll figure it out eventually.