I was heartened by how poorly "add hn to cart" would actually do on this site. Most of those articles are instantly killed by various filters. Maybe I should go back and have another read through the comments, but that was my takeaway and also something I've noticed when browsing /new.

That said, it doesn't surprise me to see this at the top of HN. It is a geeky cooking tool with a cult following. I'm certainly intrigued.