Why certain folks want to masquerade under the name of science while they present fanciful versions of unrecorded, unobserved history is no mystery, but a shame.
Wrong and wrong. The quantum mechanical description of light is satisfactory and complete; and the speed of light is constant, according to relativity, which is accepted by the consensus of physical scientists.
You can find a few fruitcakes, of course, who believe the earth is llat, or even (are you sitting down?) that the earth was created six thousand years ago, but this is true nutball-level stuff.
The average person in what century?
So you don't know nuttin' 'bout no science but you know your granddaddy weren't no ape. Science has left details of the history if you ever do want to reconstruct how it got to where it is.
It is OK to decline to review this. The main point of educating yourself thoroughly in a scientific specialty is to prepare yourself for a career, bringing yourself up to the edge so you can push the envelope in your research. People who don't intend to be scientists themselves will more likely confine themselves to layman-level presentations.
However, declining to learn even the first things about science somewhat undercuts your claim to knowing that science has everything all wrong.
Not true at all. The nature of light with respect to wave vs. particle is completely understood. Is light a wave or a particle, then? Answer: yes. The problem is that common sense tells us that a wave and a particle are distinct types of things. Common sense is the problem, not our understanding of light, however. Waves and particles are not necessarily distinct types of things; something can have characteristics of both. In fact, all "particles" have wave character, including macroscopic objects. The wavelength of macroscopic objects is just too short to have any significance. However, the wave nature of subatomic particles is significant. That's how electron microscopes were built. Without the wave nature of the electron, the electron microscope would not function.
I just returned from WallyWorld and I looked at three different WMO's and NONE mentioned the output frequency of the magnatron!