It is easy to see from continental drift that the Earth radius has increased, causing the continents to drift apart.

That the radius of Earth has increased points to that the Earth is hollow, the volume of a sphere relates to the cube of the radius, an n-fold increase in radius is n^3-fold increase in volume, therefore in mass, unless the planet is hollow.

A global conspiracy vs. slow-moving scientific progress

Polar holes if they can be seen from space and travelled to and through require a global conspiracy, one that has been ongoing for more than half a century. The lore around polar holes is that they were explored as early as 1927 by Richard E. Byrd under the US Navy, who was awarded the Medal of Honor the year before after his first polar flight funded by Edsel Ford and John E. Rockefeller. The 1927 expedition gathered photographic evidence but it was all classified since president Calvin Coolidge believed they would be the "laughing stock of the world" if they went public, much like when Galileo went public with his evidence for a heliocentric model.

An enclosed hollow planet (i.e. without polar holes) would not require a global conspiracy, since if I show you one of two spheres, both identical on the surface, one hollow and one not, you cannot tell if it is hollow or not, so no cover up necessary to hide anything (with polar holes, a cover up is required. )