Because it's so cheap to vibe-code a tool that, at least in your head, fits your use case exactly.
Code is cheap. GitHub is free (although I'm betting that free code hosting will start disappearing before the end of the year). And people want to showcase their "skills."
Vibe-code a tool, post it on Hacker News, collect stars and karma, repeat.
It's almost becoming the software developer equivalent of being an influencer...