Tbh I can't follow your logic here. You mentioned that in VanJS there are things that need to be careful with. But the same is true for other frameworks, even for plain Vanilla JavaScript. Thus what exactly the point that you're trying to make?
Complexity can't be avoided for extremely complex use cases. But that doesn't mean a simple solution that can work for most of the use cases has no value.
Complexity can't be avoided for extremely complex use cases. But that doesn't mean a simple solution that can work for most of the use cases has no value.