As lomapaseo has already pointed out, the concertina absorption of the initial 'g' forces through the collapsing of the belly section of the aircraft, resulted in only partial damage to the bottom of some items on the main deck. The galley is an example, along with a toilet/lav door which showed compression of composites over only a few centimeters along its bottom edge. Time v distance can turn an initially high 'g' force into nothing.
Also, one of the reasons the vertical stabilizer came away relatively unscathed.