The physical universe is not its description, the map is not the territor
I understand that. But a mathematical description of all the physical properties of that hill informs the climber exactly what tools are required to climb that hill. To pysically describe the hill without mathematics leaves the climber with the fact of an "unknown" quantity and quality of the territory.
The hill would be just a "hill", and that is only in the English language.
A rock rolling down the "slope" of the hill does not need to know the mathematics of gravity or friction. The people living at the bottom of the hill do.
Human symbolized mathematics are not part of the universe. They are just symbolic representations, but what they represent is a real part of the universe.
The map represents the terrain in human "language". But if correctly done it quantifies and qualifies the terrain as it is in nature.
Without the map the explorer is blind. Without the mathematical description of anything it just remains a "thing" instead of a "known" quantity.
As was observed before , wihout mathematics we'd still be in scientific "dark ages". The reason is that mathematics adequately, if not exactly describe the relational values and functions that are employed by the universe itself. IMO, there is nothing wrong with the concept of a mathematically functioning universe.
I am not talking about the number 2 floating about in space, but that number adequately maps the location of 2 interactive objects at any given mathematical point in space.
The very fact that the unmapped parts of nature are the "unknown" parts, proves the efficacy of the parts that can be mapped and are amenable to accurate descriptive quantification.
Human maths map and represent natural (generic) maths in a symbolic fashion. I don't see any problem with that concept.
The physical world functions in accordance with natural mathematical principles. That's why the representative physical sciences rely on symbolic representative mathematics. Is that not a logical conclusion?