Quantum model reduces hardware needed to break bitcoin keys by 17 times

What sources claim

• CoinDesk reports that Alice & Bob's new model reduces the hardware needed for a potential attack on bitcoin keys by 17 times.
• According to CoinDesk, the model brings a potential attack closer to reality and increases pressure to adopt quantum-resistant security sooner.

Still unresolved

• What specific assumptions or parameters does Alice & Bob's model use to calculate the 17-times hardware reduction, and what would confirm its accuracy?
• How many qubits or what hardware scale would be required to actually break bitcoin keys under this new model, and what would confirm that estimate?

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