He coined the terms "positive atheism" and "negative atheism" back in 1976...how could the article not cite him?
In any case, the fact remains that article in the OP doesn't make the quite valid distinction between positive and negative atheism...it lumps all atheists in the "positive" camp, and makes arguments that in no way apply to negative atheism.
Biased source. No contrasting sources.
Half the world has been ravaged with the purveyors of so-called “positive atheism”, to use the neologism.