krab said:This conclusion is correct.
I might also say that there are very practical consequences of your conclusion. Example: A stream of charged particles from a particle accelerator can be controlled (steered, focused) by electric fields. Such fields are set up by applying voltages to conductors of required shape (parallel plates for steerers, hyperbolic plates for focusing, etc.) For a low current charged particle beam (say less than about a nanoampere), the fields calculated from the voltages and the shapes are sufficient to find the effect on the particles. However, for milliamperes, it is necessary to take into account that the charged particle beam disrupts the charge distributions on the conducting surfaces. This is the same as saying that there are "image charges" that act back on the particle beam.
Not to mention that the very other charges of the flying set of charges (which characterizes the current) may interfere in the dynamics of the "who feels the field" charged particle.