I'm not sure I agree with the Sideprocalypse idea linked in the blog. Granted, there is a lot of "hustle" content out there about how all you need to do is vibe code an existing business idea and pay for their SEO course. And if you're one of those people selling that, or one of the people believing it... well, play stupid games, win stupid prizes.
Where the vibe coders with their slop cannons aren't present though is in things that require hard won domain knowledge. IE, stuff that requires you to actually create a new idea, off an understanding of actual areas of need.
And that kind of thing probably isn't going to do well on Show HN, because your audience probably isn't on HN.