I think it depends if you are working on an app or on a library. In an app I would recommend to use Zustand or Jotai. If you prefer a Redux-like state management with a central store and actions to update it, go with Zustand, if you prefer a proxy-based atomic solution, go with Jotai. There might be situations in library code where it's useful to use React context but I would not use it in app code. It's too easy to use it wrong.
Thanks for the credits (creator of React Flow here)! Our website is MIT and so are the docs and all the content but I don't get that you just copied content like whole sentences of the docs or parts of the readme for example.
With this "move" we are trying to ensure the further development of the library. We can't work voluntarily forever and we think that this is a good next step.