In other words, she’s calling it as it is. If you need a blockchain, it is for a very specific need. That need is to share a database of records with people you do not trust. The records need access and updating by everyone, and yet you do not trust any of them and so the network manages that trust. Sweet and simple. If you do not need to share a database or if you trust the people accessing the database, you do not need a blockchain. We’ve known this for a long time.
Anyway, the most useful part of the article on ANZ is this NIST (the US National Institute for Standards and Technology) flowchart for blockchain decision-making.