[Aloisius]

> They take the unpolarized light and polarize it by removing everything but the horizontal rays.

Those horizontal rays are polarized light. That's why it's "horizontal."

Unpolarized light is really just randomly polarized light - the polarization changes moment to moment randomly. When light strikes a non-metallic reflective surface at around 56° (Brewster's angle), the light components which are polarized perpendicular to the surface get scattered or absorbed, while those polarized parallel to the surface get reflected, so light reflecting at an angle off of water is linearly polarized in a horizontal direction.

[Podgajski]

But not all the sons rays are coming at the same direction they’re scattered from thousands of different angles. If they came off of the sun, as all polarized, we’d all be dead, burned like a laser, a laser is polarized light.

[ksaj]

You mean like why even a tiny sliver of light after an eclipse will totally toast your eyes.