How to evalutate this approach to the unification of physics?

Question

I just found this text:

Testing the tiny theory: a single fundamental principle yielding general relativity, particle physics, and gauge anomaly cancellation

The Lagrangians of general relativity and of the standard model of particle physics with massive neutrinos, including elementary particle masses and the coupling constants, can be deduced from a single fundamental principle based on fluctuating strands of Planck radius. The fundamental principle also explains the principle of least action, the equality of inertial and gravitational mass, as well as the equality of the proton and positron charge. 

https://www.researchgate.net/publication/397264142

Unusually, the author predicts that physics is complete. This is very unusual. The author is truly sticking his neck out of the window. It is hard to find an experimental counter-argument. The approach is easy to falsify in principle but hard to falsify in practice.

Answer 1

The proposal is restrictive and conservative, agrees with experimental observations, but
predicts the absence of discoveries in fundamental physics.
I found a summary at https://www.motionmountain.net/bet.html
It is a bizarre mix of interesting ideas and disappointing results.