Imagine if the hack occurs again, but is more targeted towards things that aren't just minor annoyances, and maybe happens on election night in the U.S.; I mean just earlier this year a repo on a package manager being deleted caused mass failure across the world of applications. A targeted attack on certain assets or dependencies could be very bad indeed. I would argue that GitHub being effected was more important than the other consumer based services in this attack. This is the first of many similar attacks in the coming years.
Suppose Mars gets destroyed by an unseen cosmic event. Are Earthlings inciting bullshit to go "oh shit, this could happen to us?"
If you look at HN comments from posts about the attack while it was ongoing you can see plenty of people who were also affected by the attack (for example, people looking for name servers that cached longer than allowed, or opendns' smartcache). I understand why you think "the media" sensationalizes things, but in fact it is absolutely not complicit in saying things that are not true, even for the sake of embellishment (i.e. look at what happened to Brian Williams).
But perhaps this is a smarter approach: build software and services in the most reliable way possible: offline enabled without the assumption of mostly available internet. Oh, and VOIP phone service? Gonzo. Where I work that was the worst effect of the outage. The phones simply didn't work... And we're basically a sales company. Not a lot of sales were made that day...