Unless I missed it, I reviewed around 3:13 and I didn't hear him say anything about Redline being composed of a majority of Esters.
Again, any SDS is not a recipe or a formula disclosure, but a safety document telling you that certain components may potentially pose a health risk under certain conditions. So don't take the Safety Data Sheet as the exact percentages of components, only ranges of percentages of components.
But let us say for sake of argument, hypothetically, their base oils contain 10% of an ester component and 90% PAO.
SO in 1L of oil, the PAO percentage would be ~ 765 mL, ~ 85 mL Ester, with the rest, or ~ 150 mL, being the additive package.
10% of a quality Ester can really improve the performance of the overall formulation.