When it comes to my statement "Very little of human action really involves reason," I can appeal to the science fiction comedy movie "Men in Black." In there Tommy Lee Jones says to Will Smith, "A person can be rational, but people are a panicky heard of dangerous animals."
Quantum mechanics by itself is as far as I see dead as a doornail. As for what might happen near the Schwarzschild radius there is I think a twist on the Langlands S-duality. We have in physics the basic observables length [L], time [T], mass or momentum [1/L]. Time and length are related to each other by the speed of light c. The intertwiner between momentum and length is the Planck constant 徴. However, we have a curious intertwining between mass and length, which is the Schwarzschild radius r = 2GM/c^2. By way of contrast with the Planck constant that is a reciprocal relationship between length and momentum, or certainly the uncertainty spread of the two, here we have a direct relationship.
The context where by complexity enters the world I think is due to the existence of quantum hair and its connection to open entanglement topology of states. The connection between the structure of quantum mechanics and general relativity is through the abelian translation symmetries of the Heisenberg group and the BMS symmetry. This connects with the above linear or direct connection between momentum and position.
There are a lot of unknowns here. We will have to see how things develop in the future. We may all be surprised by how our understanding evolves.
Cheers LC