true, but it is not sustained Gs, it's in a reclined & fully supported position (i.e., its more mechanical stress on the body than draining blood from the brain

true, but it is not sustained Gs, it's in a reclined & fully supported position (i.e., its more mechanical stress on the body than draining blood from the brain, which requires special training & G-suits to counteract). Also, this would an exceptional event, not the standard launch profile. I'd call it a reasonable spec, though it does seem that each passenger should be medically cleared and, ideally, physically tested beforehand.