However, from your explanation, there is one thing I want to ask, does that mean we are still safe from quantum computing attacks by using a new wallet or generating a new address on the same seed phrase ?
Anytime you make transaction, your address public key is can be known. If quantum computers is able to be used to access bitcoin private key, it will not be through bitcoin address but through the public key. If you used an address to receiver bitcoin but you did not send send the coin to another address or anyone, the public key can not be known and can be be attacked in the future with the use of the quantum computer.