Let us consider what happened when a large man-made orbiter did fall to earth.
On July 11, 1979, with Skylab rapidly descending from orbit, engineers fired the station’s booster rockets, sending it into a tumble they hoped would bring it down in the Indian Ocean. They were close. While large chunks did go into the ocean, parts of the space station also littered populated areas of western Australia. Fortunately, no one was injured....
Mocking NASA’s inability to say precisely where Skylab would land, entrepreneurs across the country sold T-shirts emblazoned with large bullseyes. Another enterprising individual took a different tack and sold cans of “Skylab repellent.” Few people felt reassured by NASA’s statement that the risk of human injury from the event was just “one in 152.”
A lot of Skylab pieces showered Australia. Some are collected in a museum there. Here is the biggest piece: an oxygen tank weighing about a ton.
from https://www.space.com/21122-skylab-space-station-remains-museum.html
So: if little Skylab can shower the earth with 1 ton pieces, your huge ship could definitely do the same.
A caveat as regards destruction: Having a big wad of metal fall on you will mush you, but your falling ship will not wreak dinosaur-killer scale havoc. Pieces falling out of orbit are moving at approximately 270 miles per hour when they hit: that is terminal velocity and will be true regardless of the mass of the falling piece, That is true also for meteorites less than 10 tons which slow down in the atmosphere then fall at terminal velocity.
Big 10 ton+ meterorites have too much kinetic energy to slow all the way down. They can hit at speeds of 5000 miles per hour or (much) more. F = mv^2 and so these things are what make the huge craters. https://www.amsmeteors.org/fireballs/faqf/#12
