I don’t know who to reach out to or ask why this would happen and I don’t know if this was done by, hacker news done by people who saw the article.
Thanks for any info.
So, I think your submission was good-faith but people were right to flag it. It's not really the sort of discussion that ever ends well online, especially when it's not a medical forum staffed by professionals that can mediate the discussion.
If the other answers here don't answer your question, there's a contact email address on https://news.ycombinator.com/newsguidelines.html.
Flagging is done by regular users. So it would have been regular users who saw your submission and then flagged it.
Why? -- well answering that requires a mind-reading skill we don't have.