I don't see it the same way. People are building these things for themselves because it solves a specific problem they have, and that means it's crafted just to their liking. And it will only become easier to maintain these because of LLMs constantly advancing (for now). So if this is also a match for what you want out of a tool, then you can easily adopt it, or even fork it to your own liking. If it's not a fit for you, that's fine, there are plenty other options that may be.
I've seen several projects like this, where there is a flurry of activity for a few days, maybe a couple of weeks, and then it is abondoned and doesn't see any more updates. Maybe they got bored of it, maybe the code wasn't actually maintanable (which can easily happen with vibed code), maybe they were just trying to get attention and didn't actually care about the project.
Sure, but projects need to start somewhere. You can't go from one user to hundreds+ without first having two users. This is how they're deciding to share it the first time, and that's fine. Use it if you like, don't if you don't. Simple. If they stop maintaining it, then since it's open source and MIT license, you can do what you want with it to fix the issues you have.