I'd say that's a characteristic of structurelessness, not of decentralization.

See how your post, sent via decentralized internet protocol, doesn't even achieve the purpose of getting read.

See how bees and ants and termites, with no central organization, don't achieve anything.

There's a lot to be said for the tyranny of structurelessness and also ephemerality and inefficacy, but this is a completely different thing from decentralization.