QUOTE: "The average
surface abundance of centimeter- to meter-scale rocks is much greater on Mars
than the other terrestrial planets."
The rocks that are found on the surface of Mars look exactly the same as rocks that make up mountains on Earth!
Because Mars is the closest planet to the asteroid belt, and because it is polluted with rust and radioactive materials, it shouldn't be a surprise to see it having igneous rocks on its surface more than any other planet.
QUOTE: "the Martian crust
consists mostly of volcanic basalt rock."
Just like the rust, the assumed source of these rocks is volcanoes; but volcanic rocks on Earth look completely different from the rocks on the surface of Mars!
Basalt (also called Mafic) rock is rich of iron and magnesium. And these metallic elements are ingredients of the rock. In order to make such a mix, a very special process is required, and not the normal natural factors like wind and rain. This indicates that they have arrived readymade from factory. And that factory must have been capable of manufacturing iron and magnesium, a star.