Mark mentioned that you rarely care about messages disappearing for previous conversations and that it's a good mechanism for privacy, makes it easier for decentralized social dms to catch up

Mark mentioned that you rarely care about messages disappearing for previous conversations and that it's a good mechanism for privacy, makes it easier for decentralized social dms to catch up
https://www.youtube.com/watch?v=7k1ehaE0bdU&list=WL&index=6&t=6567s

except for those who keep messages to go back and reference