In summary, while message signing is a powerful tool for proving ownership of a Bitcoin address without compromising the private key, it requires careful consideration of privacy and operational security. It's essential to be mindful of what information you're revealing through the messages you sign and to maintain good security practices for your devices and wallet software."
The person who is trying to sign in a message is the person who will determine the safety of his or her privacy, and sign-in messages are most often required for a particular reason, and to me, aside from the purpose of the sign-in message, all other content is irrelevant unless the date, which is supposed to let whoever is going to verify it, is recent and correct.
Any situation that will require someone to add privacy and person data to sign-in messages is not secured and can't even be requested in the forum here, as the forum is a good privacy advocate.