Spring is a simple MVC framework, it follows the same patterns as similar Ruby, Python, C#, PHP etc frameworks. React very much blazes its own complicated trail.
That statement is beyond the absurd. The API of React is several orders of magnitude smaller than Spring and similar MVC frameworks with the same feature. There is even a React replacement with feature parity, Preact, that clocks around 3kb.
Spring is a powerful but pretty complicated DI framework. That MVC stuff is also there but for many use cases (microservices, batch, CLI) it’s not really helpful.
Well, nowadays anyway. It's come a long way from the point where an AbstractSingletonProxyFactoryBean seemed like a viable solution to a problem in the framework.