I it going to be a very powerful computer and will be the god of brute forcing wallets if ever hackers gets their hands to it.
Brute-forcing to crack the private key isn't going to work. You need quantum computers for this, and if the rumour is true then although it may seem impossible to get the private keys for now in the near future this might well become a probability.
I'd highly recommend you both to actually read about quantum computers and what they can achieve.
They are
not magic machines.
People praising quantum computer as if it needs a second to break cryptography haha
There are quantum algorithms which do decrease the search space for specific mathematical problems, yes.
But they can not just easily crack and bruteforce everything.
Theoretically, quantum computer can break bitcoin blockchain if it can derive the private key in less than 5 minutes, which I don't think we computer scientists can't do in the next 5 to 10 years.
This is dangerous sciolism being spread by unaware people.
Indeed.