Correct; may not have been pressurization at all. But if not, puzzling why the two adult passengers would not have made an attempt to intervene, even if not aviation savvy. Very sad.
And leave it to the media to overshadow this tragic loss of life with overhyping the F-16’s going supersonic–who cares? I’m just glad they responded as quickly as they did and if warp speed is warranted, use it!