NIST finally jumped on the “long passwords are stupid and password rotations are for suckers” bandwagon about 3 years ago.

Problem is PCI, HIPAA and others haven’t changed their rules to accommodate. However, auditors aren’t stupid. I’ve told mine, “here, look at the new NIST standard” and they say “okay, yea MFA is better”. As long as you can point to their technology standards agency (NIST, FIPS, DISA, etc) you should be good to go.