The CTP is designed to fill a regulatory requirement that was designed in reaction to a bill passed by Congress. It was a top-down initiative, and not a response to a specific need brought forth from the bottom up.
Unfortunately, it is largely irrelevant what you actually learned, because it is a hurdle required to unlock the ATP written and the path forward in your professional career.
This will not be the last time an element of your training existed simply to fill a regulatory requirement.