Every time I see this kind of pet project I see whether they are addressing any actual issue of React or whether they don’t like React merely because it is popular. I especially look at whether they do state management or VDOM diffing differently from React. I find that if a project had done that, it is likely something the author was very proud of and was front-and-center. And there have been some interesting ideas in pet projects like using languages with macros so the build tool does part of the diffing. This one replaced VDOM with… nothing at all?

> Every time I see this kind of pet project I see whether they are addressing any actual issue of React

Then I think you're looking at those projects from the wrong angle. The point the author is making is that React is often used in situations where VDOM or complex state management aren't actually necessary. If all you're doing is e.g. validating a few form fields then neither is needed. But people use it anyway because React has become the default for frontend engineering no matter what.