It's not about how complex the component is. In my experience what matters is how easy it is to use. With React it's easy to build a world in a teacup, and that's mostly a good thing.

For "regular CRUD developers", the vast majority of us, I have zero concern about how big or crazy component code is until it's so huge it impacts page size. I'll use the easiest most feature complete library out there.

React does encapsulation like jQuery never could. I don't care if I have this vanta black box on my page as long as it's easy to mess with and gets the job done