In reply to Peter Knight.

That sounds sensible but isn't it at the same time illustrative of something gone wrong with our decision making? Automattic received a positive legal opinion on React and somehow it satisfied Matt. Matt has been one of the staunchest defenders of the GPL, I can't imagine for a second he feels a 100% okay with FB's license. On some level he decided to tolerate the smell of it. I don't think that's a good way to go about decisions that will affect an entire OSS community, especially when there are alternatives out there with no such baggage. That's why I think legal analysis does not resolve such an issue in any satisfying way.