That's a shame, since this one is announcing the kickstarter, and those weren't. And there was obvious interest, as well as interesting discussion, on this post.
Actually, we've received a clarification. 1) fundraisers are excluded from Show HN, it's in the FAQ, and sorry I missed that. 2) the community is generally sensitive to being marketed, and as much as we were enjoying the discussion, others flagged/reported this post.
Everything considered, this is a fair decision.