HN revolves around YComb and finding ideas that make great products. Someone has come up with a brilliant solution and someone else is saying they want to buy it. HN isn’t about “hacker” purity, it’s about thinking through cool ideas and maybe finding a startup along the way.

Building your own, idk, mechanical keyboard? Hackerish thing to do, sure. But buying someone else's cool design is not against "the ethos", that's a silly thing to say. Supporting artisans in their craft is Good, actually, I don't see anything about this design which make it different that way.