Earlier quoted context omitted.
There are definitely ideas that are not allowed here.
I’m not sure there are ideas that aren’t allowed so much as the way you speak, structure, and present them. I’ve tested many different ideas on topics here and some have received far more positive feedback than I’d imagine and some have been buried too. I think so long as you follow guidelines generally and don’t outright attack individuals then you’re mainly ok. The community might downvote your idea to invisible bu…
This might be a nitpick, but this depends on your POV of who's allowing/disallowing content.
HN itself allows a lot of comments that the collective HN community does not allow -- by downvoting them into invisibility.