Anonymity of the system as a hole is the value. Just like with Telegram and the concept of a secret chat, you should not only use anonymity if you particularly need it. Anonymity and Security should be the default and you should optionally to be able to not have it.

Maybe even if I don't need the anonymity now, maybe in 10 years I will, and then I don't want to start using them because that change provides information.