The purpose of the signalling here is two fold.
1) If convincing enough (with details), you can keep current customers from moving to a competitor.
2) It also lets new customers see how you actually handle a crisis. If they can manage the crisis well enough, then you can point to this instance to prove your technical knowhow to handle their needs.
If they don't tell anything, or aren't transparent, then they can expect a mass exodus of customers.
