The thing is, your sources are only credible if they submit their work for peer review.
After all, you can claim anything, but unless you show your work to other
accredited people to have them objectively assess your work, it remains just your opinion. That's just how it works.
I got all excited to see that this site actually included citations, but when I scrolled down to see the accompanying
Works Cited, I did not see anything.
While the sites "talk the talk", they do not give credible sources for their work. So I remain skeptical of any claims that they make.
You say you didn't claim it helps cancer patients?
You say chemo doesn't work, you quote someone who said it helped their aunt fight cancer, you imply that cancer can be stopped, just like scurvy, by finding that one thing that scientists haven't found (laetrile).
You are absolutely telling us, albeit indirectly, that your business can help people with cancer.
I am not saying you don't have the right to sell these seeds, but I am saying that, even if you don't advertise, that are you well positioned to make money off of other people's misery, and you are not giving them anything in return but false hope.