That's interesting. There is conflicting information about the certified copy. The State Department website says that "in some cases" a certified copy may be submitted, but it is not clear what these cases are. And also if a certified copy costs $500+, that is way too much. I am curious if your friend paid that much money. To be honest, I probably would pay that amount too for peace of mind.
I am not sure what is the average processing of a passport and will need to read more in this forum. I might travel next year in early March to Puerto Rico, but am not sure if the trip will happen any way. Hopefully by then the Enhanced ID will be ready, and I can make it.