Yes, the 'since Gutenberg' stuff is hyperbole, and I agree with the points that sometimes an idea is just waiting to be spawned from the zeitgeist : to some extent it's almost pot luck as to who gets credited as the 'inventor' in the end, often it's just someone who was in the right place at the right time.
Mostly I was just pointing out that, whether from altruistic motives or not, and whatever his personal qualities, he's probably had more positive impact on humanity than most, so to me, snide comments about him such as those found in the article just come across as petty jealousy.