I have eaten Apricot seeds. I was eating about 6 a day, 7 days a week and I never got sick.

I am happy to hear that. I am all for alternative therapies. I hope people are able to work with someone though that has experience because there may be interactions with other conditions or therapies that we do not think about. I learned that lesson by following a protocol that was circulating, although thankfully I was able to find an alternative practitioner to help me address the side effect I experienced. I understand people are mistrusting of conventional medicine, but I do not believe all doctors are untrustworthy. Without their reporting in VAERS, however flawed we might think it is, we would not have evidence of the side effects related to the vaccines. To my knowledge, we do not have a similar database for the alternative therapies or protocols that circulate.

Some of the articles on PubMed are good, but are all of them good, that is, truthful? Consider that FDA and other 3 letter agencies do not want folks to use alternatives, especially something that grows naturally. An apricot pit is probably a lot cheaper than a chemo session. Just sayin'
BTW, my boss 'cured' his niece with a protocol using arsenic, when she was dying.
I don't have any data on this - but supposedly many drugs could be fatal if taken in high enough doses.
Interesting about cyanide and B12 vitamins:
"However, each (VB2) have a different molecule attached to the cobalt ion. While methylcobalamin contains a methyl group, cyanocobalamin contains a cyanide molecule."
https://www.healthline.com/nutrition/methylcobalamin-vs-cyanocobalamin#conversion
The article suggests that cyanocobalamin is a little bit better than the natural form.

I understand what you are saying and agree with your analysis. My main point was to suggest people investigate and work with someone who has experience to avoid any potential harm.