No, the mental defenses that hard gainers have (again, just a theory based on observation) are quite different. The best way to illustrate this idea:
We have two castles. In Castle 1, built by a hard gainer, there’s no entrance or exit. The people inside the castle can only receive resources via catapult. That’s how they exchange resources and information with the outside. One must set up a catapult on both sides and throw stuff back and forth. Resources and information can get through, but it takes a LOOOONG time to do so.
Castle 2 has a gate that can be easily lifted by turning a handle. The gate is guarded by well-trained soldiers who strongly vets everyone that goes in or out of the castle. Once the “guard” says it’s okay, resources and information can be readily brought in and unloaded. This is the kind of defense that DR builds.