…. Oh!
You just explained a question I had.
I couldn’t figure out why a pin was considered more secure.
In my reasoning: How is a PIN (potentially numeric only), changed 1x a year, safer than a password (3 of 4: Alpha, Mixed case, numeric, special chars), changed 4x a year.
The answer, as you explained, is scope of trust. Machine only vs tenant-wide. That makes sense.