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.
Perhaps according to the sources whom you choose to trust.