I am not sure about this classical model and its relevance to your situation, but in any event, yes I can once again affirm that these people are correct in that EM waves to not require a medium to propagate through. Just a little background on the fascinating theory of light...
It used to be believed that there had to be a medium to propagate through and it was given the term "luminiferous aether," or the aether since at the time people only knew mechanical waves and could not understand a medium-less wave. The greatest American experimental physicist, Albert Michelson and his partner Edward Morley, attempted to prove the existence of the aether by using what is known as an interferometer. The way they intended to prove it existed was by splitting a beam with a 50% reflective mirror and "racing" the two light beams to a mirror and back. From there, they would create a new pattern that was either constructive or destructive that could be studied to determine which beam arrived sooner. If one made it back sooner, it would prove that there was a "wind" in the aether and thereby prove its existence and also provide a means of study. Unfortunately, the experiment did not come out the way they planned and to this day it is known as the greatest failure because of the detail and incredible experimental design that went into the amazing device. Their findings later were used to help prove there was no aether.
Michelson is also responsible for the most famous speed of light experiments. He determined the speed of light down to the meter per second with less than one meter per second possible error back in the late nineteenth century. Today, we have modified it by adding three significant figures in the last two decades, but his original value is still accurate (although not as precise as our current value).