I haven't used this particular framework, but having type safety in React through writing TypeScript, generating bindings to the backend so those are typed as well.

There's also a _ton_ of preexisting React components you can generally drop in and use, which is less true these days with something like a Django template.

You also have the option of doing SSR and then doing more dynamic stuff on the client side, as a sort of optimization (and plain better user experience than making _more_ server requests to get the initial page state loaded).