This has nothing to do with Fresnel. Fresnel has very little importance in metals and in perfect conductors it doesn't exist.

This was derived from Beckmann-Kircchoff-Spizichino model.

For mertal perfect mirrors the specular component doesn't exist and is equal to zero. The reflective component (mirror) is constant for all incidence angles.

For very rough metals the reflective (mirror) component does not exist and is equal to zero. The specular component is constant with a peak and then falling quickly to zero at 90 degrees of incidence.

For glossy metals that are in the middle of perfect mirrors and rough surfaces, both components do exist as is shown in the image.

The practical effect is that glossy metals at normal angle incidence present only the specular component and at glazing angles of incidence behaves as a mirror.

Stupidity also evolves!