I’m sure this will be very useful, but I’m very sad that it’s from Facebook. I really don’t want anything to do with that company.
Unlike Oracle, Facebook has embraced the OSS community adopting their tech, and hasn't wielded the patent threat ever.
His quip about Oracle was completely irrelevant to the content of his comment. In my opinion, Facebook proved themselves champions of OSS when they relaxed their license on React (which is now vanilla MIT with no stupid patent clauses).
Except a patent clause actually gives you more protection, not less. That's why some other licenses explicitly include a patent grant, like the Apache license. I think the patent clause was a misunderstanding more than anything else. In any case, Facebook responded to what the community wanted.