Anyone reading can "log" the messages. If anything, a server that always logs just forces you to understand that your messages were never protected.

Yes, of course, and i maintain private logs for my reference.

Public logs are another matter.

Anyone who has private logs can leak them, and nobody will know who did the leak if care is taken.

But anyone can log the messages and at any point they can come out for a number of reasons. None of them have to be negative or evil. Stuff happens.

I find in many ways it’s worse to hand wave and say there’s a policy against something where no one can actually control that policy.

Also, many people don’t understand that things can still be logged or tracked. So the policy example given can give many people false thoughts.

An example is Zoom video chats. It has a record feature. The record feature once on turns on shows a blinking recording icon. In one instance people got a bit upset about it. They were even more surprised and couldn’t completely grok that any one at any time can screen record their own desktops without any one ever being notified or knowing. So Zoom letting you know is actually better.