> I'm inclined to say you're mistaken. The FSF hasn't published an analysis of the React terms, but if they did, it seems pretty much assured that they'd deem it a "free software license, but incompatible with the GPL".
Richard Stallman said it is non-free [1]:
> React.js is nonfree because of its patent license restriction.
[1] https://lists.gnu.org/archive/html/directory-discuss/2017-01...