Well, that's the only advantage of proof-of-work secured blockchains. There are strategies that use something blockchain-like for simple distributed consensus, which do have advantages[1] (and also disadvantages) over other approaches to distributed consensus.

1- The main advantage over something like Paxos or Raft is simplicity. There are also serious disadvantages, and normally I would still suggest grabbing a library that does Paxos or Raft instead of something blockchain-based. Still, it's not "no advantage".