marvindanig understands that, judging by their comment. But the portfolio companies used to do Show HN, just like everyone else. Lately, they've started doing Launch HN instead, so they are separate. I think the question is around why that changed.
interesting. do you have an example of a Show HN that was an YC incubated company that the time of the post? (I believe you, I just can't find one as an example).
Launch HN: YC portfolio companies showing HN what they've built, often within their batch (but can sometimes be years after they went through YC)