I don't think all out nuclear warfare was expected to result in any nuclear fratricide with one's own warheads being taken out by previous detonations.
Most likely correct, was just throwing a possibility for a nuclear armned F35. It was along the lines of whats been mentioned previously about that being away to take out incoming bombers in the cold war.
I think they did a demo of someone standing underneath on the ground whilst they set off a tactical nuke overhead. With the possibility of the Chinese being mass produce hypersonic vehicles I was wondering the brute force method had a place.