Point 2. sounds kinda sketchy. Facebook's BSD says that even 'take a direct financial interest in' suing is forbidden. So if you begin cutting React out of your operations and then sue them already React-free they will probably try to claim that for a time you were using their patents in React illegally because you considered suing them before removing it and at that moment the patent grant terminated.

https://github.com/facebook/react/blob/master/PATENTS