The polite convention on HN is to say this was discussed previously, and link to it, especially when it was last submitted and discussed over four years ago :-)
I'm always confused about "Guidelines" and "FAQ". It seems that whenever I have a question about HN, I need to consult both, because it is not clear at all which site covers which question.
Maybe "Guidelines" and "FAQ" should simply be merged?
I understand what you're saying. There's the Show HN guidelines as well. One could imagine them all as three sections on one page. The guidelines are for what you should do; the FAQ for general information. Then again, they're short. It's not a lot of effort to check both.