tl;dr: denial of the 10X productivity we all observe in practice in any large group. Implies its not true until an 'official study' says its true, regardless of vast empirical evidence that supports this obvious fact.
Huh? The article repeatedly calls the 10x assertion 'mythology'. It disingenuously tries to 'debunk' the history of this assertion while blithely ignoring testimony from throughout the industry.
Besides, OP challanges the 10x programmer notion on the basis that there are methodological issues in the papers and books, and then goes on to list... a series of tweets.