Yes, it is correct that you are safe if you never interacted with the said contract. However, it is also important to remember to remove any old approvals that you no longer use. This is especially important when dealing with contracts, as it can help to prevent potential security risks, such as unauthorized access to or manipulation of data or funds. Removing old approvals can also help to reduce the risk of any potential legal issues, as well as helping to ensure that you are not at risk of any potential financial losses.