I think they act as if making these bets is the only way to save themselves. None of them care about humanity obviously.

I think they care about the nebulous concept “humanity” as represented by themselves “the light of consciousness”. Humans? Not so much.

Why is that? Anything he did for Apple is owned by Apple.

Then he'll make his email or other contact information available in some manner.

Right. To be fair, the linked gist does call this out: "Cascades currently appear in languages including Dart and Smalltalk"