I would think a Launch HN would know better than to use "open source" with a non open source license. It is source available, sure, and it's your software so you can license it as you wish, but don't call it open source as that continues to pollute the very idea of the software freedoms that actual open source licenses are designed to provide
I actually clicked to commend them on being open that it's "source available" but I see now that was an edit. Seems like a good strategy is just to embrace the source available label, people either don't see the distinction or they're like you and me that will come and complain if someone uses "open source" incorrectly.
I would think a Launch HN would know better than to use "open source" with a non open source license. It is source available, sure, and it's your software so you can license it as you wish, but don't call it open source as that continues to pollute the very idea of the software freedoms that actual open source licenses are designed to provide