"And because Blockchain is effectively run by a network of unrelated computers, it produces a permanent ledger of transactions with which no one can tamper. Until now."
“The invention is not designed for ‘permissionless’ systems, like the cryptocurrency system supporting Bitcoin, which is open and decentralised and where the absence of a single governing authority makes absolutely permanent, or ‘immutable,’ recordkeeping vital."
The author of the article does not seem to understand that decentralized openness is an essential part of blockchain tamper-resistance (you can rewrite your copy of the Bitcoin blockchain, but you cannot get it accepted without controlling a significant part of all global Bitcoin mining.)
I wonder how many blockchain-based solutions will be sold on the grounds of tamper-resistance, when the way they use the blockchain actually negates that assumption?