Than what? I couldn't imagine react being hard, maybe for novice developers that just start with programming in general.
> React and other frameworks spent so much effort abstracting the render loop
Considering how big is community adoption and teams that are working on big 3 frameworks, they're doing it not "just because" and not to make your app slower. There are reasons for this and this new library will learn them as well, just like svelte did with their reactive variables approach.