I’m glad to see an ability to wipe out a Facebook message that should never have come into my mind, and 10 minutes is an adequate period. The thinking that governs when you can wipe out something posted in WhatsApp clearly has a method, but it’s far less straightforward than a fixed amount of time.
https://9to5mac.com/2019/02/05/facebook-unsend-messages-ios/
Abycats' Thoughts 