So the story goes, S2 of Disco Kurtzman was on a "Fix Canon" kick and wanted to address all the "canon issues" fans complained about with S1. Among those, Klingons grew their hair back and began flying around in actual D-7s, we start seeing TOS-style Starfleet uniforms. Kurtzman also wanted to address why the Crossfield class is twice the size of a Constitution class but only has a fraction of the crew. The solution, the ship has a hollow interior that can fit a turbolift rollercoaster and all the habitable areas located along the perimeter of the hull. He supposedly decreed this by executive fiat over the objections of the show's art department who already had their own ideas of the ship's internal layout which were not consistent with Kurtzman's decree.
Then the whole matter got negated anyway in the Short Trek where we see the Enterprise also has a rollercoaster turbolift.