"Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity."
I'd argue that we should simply flag accounts as hackers, thereby, by definition, greenlighting anything they post, except I wouldn't be one of them.
When you post as the off-topic police, you're defining off-topic in a different way than this site's guidelines suggest, and that is what I find annoying.