Snark aside, given the context, this really seems like a baseless attack on independent open source developers, who represent a significant potion of this site's subject matter and target audience. Genuine question: why do you feel that this warning is appropriate here but not the dozens of other solo github projects that make it to the HN front page every week?
https://news.ycombinator.com/newsguidelines.html
Given we're a technology-focused site, Hacker News readers can be reasonably assumed to be technically proficient, and aware of the importance of taking normal security measures.
Regardless, your comments were needlessly hostile and not in keeping with the style of discussion the guidelines ask of us.