Quantum computer is expected to have the capability to break a 256 bit encryption within seconds. However, it has not yet become a reality, only a certain degree of it have been achieved!
Now, I would agree to the point you are trying to establish! Having an weapon doesn't always mean it will be misfired and used against the humanity! So even if the quantum computer is built so capable enough to break the encryption of bitcoin network, it is least likely to be used for this purpose!
That's the perfect description. The fear about the quantum computer is all about breaking the network of bitcoin. In reality this isn't possible with the so called quantum computer from Google. This performs mathematical calculations that is impossible with traditional computers, likewise does complex mathematical calculations in 200 seconds which takes 10000 years on traditional computers.Now, I would agree to the point you are trying to establish! Having an weapon doesn't always mean it will be misfired and used against the humanity! So even if the quantum computer is built so capable enough to break the encryption of bitcoin network, it is least likely to be used for this purpose!
As the bitcoin network is of complex algorithms there existed some fear. As for experts view the super computer at present has got only 53 Qbits which is the power calculation. To break the bitcoin network it requires at least 1500 Qbits. This way bitcoin is always secure.
