The lawyer who wrote this piece [1], AND automattic's general counsel agree on this.
> Automaticc’s general counsel also agrees with my analysis of contractual and copyright liability in that the patent clause does not revoke the underlying license.
[1] https://medium.com/@dwalsh.sdlr/react-facebook-and-the-revok...
This cannot happen. This is not a thing. Nobody is legitimately worried about this; anyone who is needs to take a deep breath and stop being ridiculous. This has been clarified many times.
(Source: The plain language of the license, multiple independent lawyers who have commented on this, Facebook's official license FAQ, etc. The BSD license does not terminate when the patent grant does.)