White light does indeed do the things they say. But not through the ears. Light enters the eye and passes into the posterior cortex to create conscious vision. It also travels into subcortical regions that produce unconscious vision (i.e. blindsight phenomenon) and into the suprachiasmic nucleas of the hypothalamus where it resets our circadian rhythm. This has been known about for ages, and there are a number of products that use this pathway for clinical benefit, e.g. lightboxes for treatment of seasonal affective disorder. Light shined in your ears does not go to your suprachiasmic nucleas and hence it will do absolutely nothing beyond a placebo effect.
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