Dear Constantin
I like your essay. I suppose that some physics theories are mathematical fiction tools for explaining of reality. The problem is the absence of real substantial models of particles, processes and interactions. In the Theory of Infinite Hierarchical Nesting of Matter there were built some substantial models. For example in §12 of the book: The physical theories and infinite nesting of matter. Perm: S.G. Fedosin, 2009-2012, 858 p. ISBN 978-5-9901951-1-0, there is the model of quark quasiparticles. In Standard Model are about 20 of unexplained parameters in order to fits the facts that is too much for any physical theory. The problem with the hole gravitation theory is that we can not imagine the evolution of holes - why they appear with their properties? What do you think about strong gravitation ? This force is universal for hadrons and leptons and may be the base of strong interaction. And the substance of all particle is the same but in different states, as we see for the substance of planets and stars. You deny the black holes and in the article Covariant theory of gravitation there is some other arguments against black holes. I think it is very hard to create a Theoretical School based on Hole Research Technology for searching and teaching the talented people. But it may be at the same time the very fruitful enterprise in science.