More extended loops or "arms" of each rigid string particle is supposed to create more Axion transformation into Gravitons or other electromagnetic monopole photons per time unit.
So if the new physics black hole nucleus is represented as a compact quantum knot then there is no graviton production supposed.
https://www.researchgate.net/publication/320226725_Emerging_Gravity_by_Dipole_Repeller_Rigid_String_Pressure_the_Origin_of_Quantum_Gravity_and_Non_Inertial_Black_Holes#share