ETFBitcoin just mentioned that quantum computers themselves cannot crack the private key which is why I don't understand why you are confused here. People assume that sophisticated technology in the future can somehow crack these addresses, but it is clearly not that simple.
Many BTC will stay lost forever unless someone finds a solution to this problem which is highly unlikely.
No. What i meant is Quantum Computer cannot crack the private key of an bitcoin address where it's public key isn't known