I believe Biden won because he successfully displayed himself as being moderate, and someone who would not bully his opponents the same way that Trump did, obviously once Biden got into office, both of these proved themselves to be false.
I was surprised at how radical some of Biden's initial policies were. I wonder if age has something to do with it. A lot of political leaders have one eye on setting up a career for themselves after their brief time running the nation ends, whereas there isn't much chance that Biden will launch a business career after his time as president is done. Similar for Trump, he already had his business empire set up, he didn't need to pander to anyone else.
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As white light passes through the atmosphere, it is scattered, and blue has the shortest wavelength. This is why it appears to dominate. This technique of scattering to make something appear blue is a technique used by politicians. Just look at the Covid vaccine information. It is scattered to make it appear to be blue, but in reality it should be red.
If you look up into the sky, then all of the white light (light of every colour) is still there. Our light comes from the sun, and as you say Rayleigh scattering causes the sky to appear blue... so when we look at the sun, we are looking at all of the light that hasn't been scattered, which causes the sun to appear yellow (or red in the evenings, when there is more atmosphere for the light to penetrate). If you look at the sky you see blue; if you look at the sun you see everything else.
Same with the Covid vaccine. All of the information is there; you're just looking in the wrong place.