Earlier quoted context omitted.
Why is it sane to lose the patent grant if you are a aggressor in a patent lawsuit against Facebook (for any patent, even ones unrelated to React)? The clause also doesn't explicitly cover software patents only, so if Facebook infringes on your hardware patents (which is plausible, since Facebook does hardware related work as well), you still can't sue them.
> Why is it sane to lose the patent grant if you are a aggressor in a patent lawsuit against Facebook (for any patent, even ones unrelated to React)? Why should Facebook support companies that are suing them?
If they were offering something unique or especially distinctive, then maybe it would be worth risking, but as there are half a dozen or so alternatives, why bother putting myself into that particular pickle?