If this had happened on self hosted email server, people would be claiming "this is why you don't self-host email". My company self hosts email and we have never had an outage of this sort. ever. All support emails to gmail accounts are now bouncing for us. It's also been more than 2 hours since this problem started.
The name for this is "victim blaming." Someone suffers from a catastrophe (or from abuse, but that's not what happened here), and you imagine a way that it could've been avoided, never mind that things could've gone just as badly wrong the other way around.
But far more consistently. Most users have no idea how the Internet works, let alone hosting something as complex as email. They'd just stop using email and switch entirely to Facebook.