Sabine Hossenfelder says: We have no observation data about BH evaporation, so thus unsolvable. It is the most over hyped problem in all of science. see: https://www.youtube.com/watch?v=mqLM3JYUByM&fbclid=IwAR2tAtV7tLvvg-BU6M8Nb-mRr2xJ1gfnfxuIEQFpJIbC6QbKlZqScTbP84U
Q-FFF Theory however says, the assumption that the oscillating dense primary string particle vacuum is the origin of the Casimir force pressing two close plates together. Second each atom collision changes one vacuum particle into partly a less pushing graviton which makes quantum Gravity into a dual opposite pressure force. So the stronger vacuum pressure makes it an attraction force. see:
Emergent Gravity by Dipole Repeller Rigid String Pressure the Origin of Quantum Gravity and Non Inertial Black Holes.
https://vixra.org/pdf/1710.0050v1.pdf
