I'm fairly sure you're mistaken. They changed it so it was better, however you still can't sue them or take any acton against them or the license is revoked.
Edit:
> The license granted hereunder will terminate, automatically and without notice,
if you (or any of your subsidiaries, corporate affiliates or agents) initiate
directly or indirectly, or take a direct financial interest in, any Patent
Assertion: (i) against Facebook or any of its subsidiaries or corporate
affiliates, (ii) against any party if such Patent Assertion arises in whole or
in part from any software, technology, product or service of Facebook or any of
its subsidiaries or corporate affiliates, or (iii) against any party relating
to the Software.
Do note that the clause you quote applies only to patent assertions. This means that your patent license is revoked if you bring a patent action against Facebook (or if you sure someone else for using React), but not if e.g. you sue them for infringing your copyright, or any other matter.
This does seem like it would be a standard clause for any patent agreement with another party, but IANAL.
Edit: > The license granted hereunder will terminate, automatically and without notice, if you (or any of your subsidiaries, corporate affiliates or agents) initiate directly or indirectly, or take a direct financial interest in, any Patent Assertion: (i) against Facebook or any of its subsidiaries or corporate affiliates, (ii) against any party if such Patent Assertion arises in whole or in part from any software, technology, product or service of Facebook or any of its subsidiaries or corporate affiliates, or (iii) against any party relating to the Software.