alt Hacker NewsThe real risk here isn't AI training - It's deanonymization. People posted in a "private" community under nicknames.
However, the server administrator enables the "discoverability" feature for everyone. So the entire history of members who never chose this option suddenly becomes discoverable and linked to their accounts. Use the same nickname on GitHub or X - and in a matter of seconds, it will point to the same person.
The only thing server owners control is whether the server is public or not. They can’t set this particular aspect of it on or off, only individual users can.
As for turning a public server private or vice versa, that’s a very noticeable and impactful decision in lots of ways already.