Reacts added some poor abstractions over the last decade. Looking at you hooks and effects.

But its far from the worst.

It was the first framework to put together JSX, a functional way of defining components and simplifying state. This was a monumental improvement. As a result they earned mass adoption.

As a result its the framework that now has a community moat that is not going to crumble until someone else can break ground in the way they did.

Sure, some of these could be considered "better" but they're all better due to incremental improvements for Frontend Engineering.

None of which are substantial enough to unseat the king