What a load of nonsense. Two rules to never forget. First a security chain is only as strong as it’s weakest link. Second no one remembers a lengthy password with no dictionary words, special characters, and numbers that isn’t reused in other venus.
Longer and more complex passwords only increase risk after a certain point. Cut and paste, password managers, post-it notes, reusing passwords they are all methods often employed by people with too many password requirements. This nonsense is much like putting a giant impenetrable lock on a house with tons of windows. A long obnoxious overly complicated password simply just isn’t the only way in.