> They provided password requirements which he ignored.

No, you misunderstood what happened: "Chrome inputs only abcdefghijklmnopqrstu (20 characters) as shown below"

1Password generated a password longer than 20 characters. When pasted, Chrome silently truncates the paste to the input maxlength!

Look at the screenshot: The requirement "Between 8 to 20 characters long" has a green checkmark, because the requirement is satisfied.