We have not "fallen" from emptiness based upon any "lack". It is more like we "bubble up" from emptiness. In the that bubbling up (of potential) process, we manifest in the broader buddhamind space. Kind of like the primordial buddha providing a stable bubble (what we call the universe), so that we can grow and stabilize as a being.
As part of this individual stabilization, everyone becomes "self aware". In this early self aware phase, one becomes attached to various items that they perceive in the stable bubble of buddhamind. This attachment is basis of all of the ego stuff that sentient beings experience.
The growth of the individual self aware bubble continues over a very long time. Wisdom starts when one begins to "clear out" all of the underlying ego attachment within the individual self aware bubble. Higher wisdoms comes as one starts to further expand and integrate that self aware bubble into the broader buddhamind space.
When one begins to integrate into buddhamind (3rd & 4th bhumi), the clarity of this buddhamind radiates into the world. That clarity/energy is often called "light". That light though not able to be really seen (as it is clear), can be felt at a subconscious by all beings. Beings are naturally attracted to that light, and hence the beings look to that person radiating for guidance. (hence master-student dynamics)
I would agree that often people get attached to the process (and descriptions) itself, rather than the real underlying point.
What you call the blond system in classical tantric buddhism or dzogchen, would be known as Guru/Diety (or Dakini) yoga. The system is highly beneficial because one is using that "higher" buddhamind direct light flow and sort of imbuing it at local individual self bubble level. It takes advantage of the natural male-female energy dynamic as sort of the delivery mechanism, but it is flowing a more pure light (than energy) into the systems. Hence the clearing/purification process is greatly accelerated. With the accelerated approach, one has greater access to what you call "wisdoms".