I'm thinking with these advise you are listing you want to share an experience with users to make the advise really teaching to readers.
Never tell people what is in your wallet, you may become a person the hackers and scammers focus on.
I don't believe this, I think there are people or person you can tell but the most important thing is not to expose your passphrase because even hackers can't have access to it if you don't disclose important feature or clue to your password. The advice therefore should be to be careful with not exposing of your password.