Second, The power of positive response to negative situations. Lord knows how long it would have taken them to work on MRR if not for the rejection and they could easily have wasted time fiddling with copy and graphics, but the pressure for YC to re-evaluate them made them release ASAP and now they are already making revenue. At the end of the day, YC rejection allowed them to start generating proper revenue before they would have initially, to me that's a win, and they still get to keep the shares YC would have taken and now they have a higher valuation for whomever they apply to next for funding.
This is a great framing of a story that could easily be a sob story blog post. Keep it up, guys. You are bound for success.