INAL. You have to differentiate between copyright and patents. From the perspective of copyright you're perfectly in the clear, the grant of rights that's par

INAL. You have to differentiate between copyright and patents. From the perspective of copyright you're perfectly in the clear, the grant of rights that's part of the BSD license will not be revoked. What will be revoked is the right to Facebook's patents insofar they apply to React.js. First of all that that requires, that Facebook actually has patents that apply to React.js. It also means you're no worse off than without a patent grant. I prefer the Apache 2.0 wording, but this seems to be blown widely out of proportion.