This thread is full of people who, never having been immigrants in societies hostile to immigration, dismiss the tone of the article as ridiculous.
Those people are simply wrong. Speaking up in places where you are not lucky to have that societal right has consequences. Some of those are legal, but some are not.
Criticizing the author for the politeness and secrecy of all things is a statement of immense privilege.
Criticizing falsifiability, on the other hand... One usually expects more precise estimations for a hashed prediction.