@enkiv2 For ordinary citizens, the ability to unpublish / recall content seems fair -- that's the EU's RTBF.
For organisations, governments, highly significant individuals, criminals, and others with significant social obligation or power, the ability to capriciously unpublish is much more problematic.
The nature of online communications makes what were previously _streams_ into _records_, which can have tremendous durability. Everthing needn't last forever.
Your Slack DMs aren’t as private as you think - It's much the same situation as corporate e-mail https://www.vox.com/recode/2020/1/24/21079275/slack-private-messages-privacy-law-enforcement-lawsuit