What I should have said was "So I'm not sure that you can say that ~80% of data breaches are related to static passwords, but it sure a big number and a problem" because:
* hacking-related breaches != data breaches and
* stolen and/or weak passwords != static passwords
But the bigger point stands: passwords are a problem.
weak passwords can be mitigated against, and password reuse limits (of one - no password reuse,
ever) the attack surface from there, along with using HIBP's breach database. NIST updated their recommendations about passwords, and forcing a change of password every 30 days was removed because it caused other, more leaky behavior in practice.
Nobody said that.