Their proposed topological_toric_code() function is entirely trivial. It initializes qubits as an array of zeros. It then runs a loop applying expm(-1j * np.pi * 0). Mathematically, the exponential of zero is simply 1. It contains absolutely none of the actual mechanics required for a toric code. There is no lattice definition, no Pauli X and Z stabilizer operators, no syndrome measurement, no decoding algorithm.

It is just a trivial statement of 1 = exp(0). And then it adds a bunch of nonsense about it being a novel toric code.

EDIT: looked at a few more. They're so bad it's hard to even believe AI wrote them. Must be a pretty crappy model.