You don't speak for humanity. Believe in souls or not most people do and we need to understand that when we use abstract words like 'humanity believes in x'.
Simply naming a logical fallacy isn't an argument. And in fact I claimed it would be fair to suggest humanity believes in souls, I didn't make the claim. Rather, I suggested it is far more reasonable (though not a fact -- "humanity" is an abstract subjective concept with no fixed meaning) to assert humanity believes in souls than that humanity doesn't, a silly assertion the article makes without argument.