An electrostatic field is indeed a real phenomenon created by electrons, which can be detected. The discussion highlights that virtual photons, used in quantum field theory, are not physically detectable as they are merely calculational tools in perturbation theory. To derive a Coulomb field, one must sum an infinite number of Feynman diagrams, indicating the complexity of the underlying physics. The distinction between electrostatic fields and virtual photon fields is emphasized, with the former being a coherent state of the electromagnetic field. Understanding these concepts requires delving into advanced quantum field theory literature, such as Weinberg's work.