Get in the practice of saying, “this tech is moving along quicker than anybody thought.” This news just broke a couple days ago, allowing for potentially thousands of qubits in a single machine.
The genius was making a control chip enter the near-0K temperatures alongside the qubits. It’s sort of like jumping from I2C (peripheral expects to be dumb and interrogated for logic to happen) to PCI(-e) where the end device is expected to perform lots of logic and the data channel is just for message passing (e.g. GPU crunches lots more calculations than the more abstract commands from the CPU). There are far fewer worries about decoherence when everything operates within milli-Kelvin range, allowing us to pack more qubits together for calculations.
Of course, once stable room-temperature qubits or quantum optical computing (exploit light for quantum behavior instead of electrons) advances dramatically, all bets are off. I believe these parts of the human tech tree are achievable.