Since crisis there shall be, what would be the best kind of collapse?
What would be the kind, that is, which might (conceivably) tend to lead to repentance before it it too late?
This is an easy question to answer, because there is only one answer: collapse of the mass media for long enough.
Any other crisis which left the mass media intact would be refracted through the lens of the mass media, which would suppress, distort, and simply lie about what was going on; as has happened with all other crises until now: riots, crime, economic hardship.
But denied the possibility of having reality displaced by the view from the mass media - people would be forced back onto their own common sense and experience.
If anything could induce a state of mind conducive to recognition and repentance, that would.