16+ characters (variable length), randomly generated, you’ll be fine. Conventional computing will not crack a password of that length in the next 30 years.
True quantum computers don’t exist and the study that Tom’s Hardware is summarizing doesn’t magically solve quantum decoherence. Quantum computing, as in a system that has a million physical qubits to create 1000 logical qubits so it could actually run a program – is a long way away.
Your password is going to be compromised by keyloggers, malicious apps, spyware, database compromises, leaks and the other usual humans being humans mistakes long before someone is running “break all the passwords dot exe” on their Q-Hacker.