I dont agree with any of the statements made in the article. They are straight forward mentioning that blockchain will be kind of threat to the humans in future as it is filled with decentralised nature which can lead towards the hacks, leaking of the data etc (my guess is that).

But I think through there is decentralisation of the blokchain which literally means that everything is based on the public ledger as open source doesn't mean that it is not secure at all. Every bit of info is irreversible in the blockchain and thus it become the strong link towards the protective layer. May be its just attempt to show how blockchain is bad.