@epstein-jeffery I've been reading up on it recently too. Similarly intrigued. There are some really good discourses on it on Grant Generoux's forum. Here's one example of someone bringing up their skepticism toward Low-A.
https://ggenereux.blog/discussion/topic/why-i-dont-think-this-is-a-legit-theory-anymore/
And this article and super long comment thread on this post from 2018 is super long and pretty interesting.
https://180degreehealth.com/vitamin-vitamin-villain/
These are more specifically related to Vitamin A as toxin as opposed to explicitly "Toxic Bile Theory". But lots of good stuff to chew on through the conversations.