I am a bit concerned that this will be read as "Password policies must require the use of no special characters", possibly as a misguided attempt to push people away from adding using "Password123!" as the password. I wish the memo had spelled out a little more clearly that there's nothing wrong with special characters, but they shouldn't be required. Also, is a whitespace a special character?
>>CGames+(OP)
If we were to stop using special characters and only use human friendly phrases (eg “jupiterIsTheSmallestPlanet”) it wouldn’t be the end of the world.
>>pm90+C2
But if a whitespace is not a special character (or punctuation) we can add entropy with "Jupiter is the smallest planet!" while still being human readable and using the passphrase paradigm.