I do not.I respect you for questioning the science, and I will say I've only parroted what I was able to read through searching, and it seemed quite settled than the brain makes its own cholesterol. you likely have a much better understanding of this than I do. I know much of brain science is more speculation than irrefutable, concrete fact.
I can accept that certain cells (maybe all cells) have vestigial capability of producing cholesterol, but the evolution of specialization (and acquisition from the environment - i.e. eating) means it can't be the only method and doesn't make sense that it would be the primary method.
I have for a long time found discussions of cholesterol miss the forrest through the trees. It is the one biological substance that differentiates plants from animals, and it's pretty important.
All of that said, my understanding of biology and biochemistry is 20 years out of date. I don't mean to come across as a prick. I just like to employ socratic reasoning, within the context of what I know to be unquestionably true.
I also have a mother with Alzheimer's, and did a massive amount of research Summer of 2021 when she was first diagnosed. Some of this came up within the context of then cutting edge drug development, like Aduhelm, which has since proven to be bunk.

