If you have realy a little understanding how databases and bitcoins are working and assuming you read this article carefully and understand it you shouldn´t come to the conclusion the author is an idiot.
I am not an expert but in the database are no bitcoins stored. Only numbers that represents an accounts amount of bitcoin. If you "fake" or "counterfeight" this number you just change a number inside a database. The bitcoin block chain was never affected. So sure you can create an "counterfeit" amount of any item/number inside a database. And nothing else was mentioned by the author.

"The hacker was able to create 2 million counterfeit BTC by manipulating the company's trading database ..."

In my opinion from an technical point of view this article claims no false facts and is correct.
The question for me is if it realy was happen in this way. But that makes me not calling the author an "idiot".