I doubt that.

This is AAA talent. They can always land elsewhere.

I doubt there would even be hard feelings. The team seems super tight. Some folks aren't in a position to put themselves out there. That sort of thing would be totally understandable.

This is not a petty team. You should look more closely at their culture.

Where else can they participate in this possibly humanity-changing, history-making research? The list is very, very short.