I think that's what they are arguing with - if you increase number of entangled qubits - your error rate will explode the same way that your "computational pote

I think that's what they are arguing with - if you increase number of entangled qubits - your error rate will explode the same way that your "computational potential". If that's the case then the whole quantum computing has a huge problem, you'd have to cool it down closer and closer to absolute zero. Having more machines that do poor calculation won't help here - you'll end up with a farm of expensive fridges. Just for the record - I want this to be false, quantum computing will hopefully work.