Read on Twitter a while ago about a guy who ate almost nothing but Soylent for two months and started getting joint pain and trembling, and was falling over a lot. Then there was a comment by someone on Reddit who started having seizures and anxiety and blamed Soylent. Seems crazy that people are just eating nothing but this stuff for months on end and not thinking about the consequences.
It's outrageously unlikely that either of those people had a prion disease. See my reply to your previous comment for details. The median duration of CJD (which is the most similar to nvCJD and the best proxy for the statistic I could find easilty) is 4 months. That's duration of the disease before death. If the commenter had those symptoms because of prion disease, I'd estimate a greater than 50% chance he'll be dead by February. Again, it's extremely unlikely that he had prion disease.