[natrius]

Blockchains fork constantly. Most forks aren't ever treated as a source of truth by anyone, but there's always the freedom to do so. We've created these fancy spools of receipt paper and we're all just trying to decide which one to pay attention to. Software can never make that decision for you, nor can a particular development team. I consider the freedom to choose one's own source of truth to be valuable. Others seek to force people to treat something as the truth even when it says something they disagree with, which is untenable without the use of actual force.

Blockchains are as immutable as the people who look at them decide they are. They're still pretty useful for creating reliable sources of truth.