

Nothing but if a Lemmy instance decides to do something bad others can defederate from it and the users have the ability to move to another.
It is therefore more reliable than commercial equivalents.
The only privacy benefit I see is that the servers and clients don’t sell your data or track which buttons are pressed. Though if the wrong instance/client is used that could still conceiably be problem.



Worthwhile note to people too lazy to click on the link is that this is the 2021 version. In June 2024 (which is linked at the top of the linked article) the numbers look a little different but not much better for the US.