“Last week, I posted about my breast cancer diagnosis on Facebook. Since then, my Facebook feed has featured ads for “alternative cancer care.””
In my experience, cookies and browsing history influences facebook ads more than the text in posts. For example any links sent via messenger or whatsapp or products on amazon.
Could it be the case that the authors browsing history is actually what is driving these ads? For example, if the author is an expert on pseudo science it seems natural that they would research fake cures at some point.
I was always assuming that if I reply, then they would send the spam links, but your theory is better.