The olive oil is $35 per 750 ml bottle. It's a little hard to find the quantity.
An ordinary olive oil might cost $12/litre or about a quarter as much. So, not outrageous, but still expensive.
I'm not sure he thinks his methods will achieve immortality. his overt goals are reversing aging and improving quality of life. If he's talked about living long enough for drastically better tech, I haven't heard him say it. I think he does believe it would take too long to get to a general solution for aging for it to do him any good.
The food he sells is fairly expensive.
I've added a link to the post.
Unfortunately, "he's too weird" was most of the response I got at ACX.
I suggest thinking about other possible social dark matter.
I think deliberate weight loss makes a lot of people's lives worse-- that being hungry and distracted (possibly chilled and more frequently sick) isn't worth greater social acceptance, and that the current insistence on leanness is about looking right rather than health.
Asexuality could have fit in the article.
This might be related to the circular reasoning that gay people shouldn't be trusted with security clearances because they can be blackmailed.
This reminds me of something odd about Socrates (from memory)-- when he decides to accept execution rather than exile, all of the sudden he's talking about adherence to values-- he owes so much to Athens that he won't live somewhere else-- rather than all that questioning. How does this fit into his story?
I can make some guesses, but they're no more than that.
1. His health was failing, and he decided to go out with a bang rather than enduring a decline.
2. No place else wanted him, either.
3. He came to realize the damage he was doing, and thought the punishment was appropriate.
See also the economic effects of the Great East Japan Earthquake (2011).
https://en.wikipedia.org/wiki/Aftermath_of_the_2011_T%C5%8Dhoku_earthquake_and_tsunami#Economic_impact
The March of Folly: From Troy to Vietnam by Barbara Tuchman.
I don't like the way he treated his girlfriend, but that doesn't address whether his health advice is good. It did make me want independent verification of his claims about what he's selling.