It can, but it's very unlikely. Most randomly generated data doesn't have a memorable structure.
Please pay attention to the use of pass-PHRASE. Pass-phrases are well understood at this point as far as what they are and how to generate them securely. A key point is that they’re much longer so have plenty of entropy to resist cracking attempts.
The article is discussing the merits of letting users generate their own passwords at all. So unless you can guarantee the website will generate nice pass phrases, you’ll have to account for weird characters too.
A password manager can generate nice passphrases. Really, generating a nice and secure passphrase is no different from a nice and secure password at this point. It's all about entropy and byte mapping.
Sadly you still have many sites that have stupid password rules like requiring numbers and "special characters" -- but no spaces, and no, periods don't count as special characters, and blah blah blah. Point being, the ideal of a simple phrase that's easy to remember gets thrown out the window when you have to deal with all the different rules.
I’m getting very confused about the comments here that are trivially refuted. So make a passphrase like: Correct6$Horse7&Battery and be done with it. That’s still easy to write down and remember while transcribing.
Nobody’s arguing that passwords/phrases should only be remembered and never written down or stored in a password manager. That ship sailed a long time ago.