All the other qubits scaled the same way when they were in a simulator, too. When they actually hit reality, they all had huge problems.

Other qubits in general do not scale the same way. Some for example do not allow arbitrary point-to-point interactions, which means doubling your physical qubits doesn’t double your number of logical qubits. There are other ways in which scaling was sometimes nonlinear.

Note also that this isn’t a simulated result. Microsoft has an 8-qubit chip they are making available on Azure.