This is excellent advice, and is what I've been recommending for years and years. For years the assumption has been based on how Grandpa managed his 8-character passwords. For years, the assumption has been that users are idiots - an understandable (if generally wrong) view that came out of the IT we hate our users mindset. And so we had all the stupid rules about how complicated your password has to be* which confused users and increased the antagonism between IT and the user community. And then the passwords had to change ever 90 days.
Because of the NIST recommendations.
This is a big first step. Sadly, it is likely to take years before this new guidance sinks in and everyone lets you pick one really good password that you remember and which you never have to change. But all journeys start with a single step.
* My favorite password complexity rule is "Password must be a palindrome". Sneak.