I had the same reaction. I'm usually quite cynical about these things and was ready to scoff at it, but I thought that was about the most you could really accomplish in an apology.
The key to me was that it wasn't focused on how sorry YC is, it focused on how great of a team Continue is. Far too many apology posts are just another way to get attention, so it was nice to see that attention directed at the party receiving the apology.