Let's be perfectly honest here. The whole blackamail situation could 100% still have happened even if this whole thing was already in place. Just wait till person is having a fully private scene, since the need for subtles there is gone and nobody uses them in those circumstance. And with that comes realization that as a solution to potential repeat of that story, this change is entirely pointless. I am not against it being there, but it being on is not going to solve anything, but will be annoying thing everyone is going to trip up on.
To add onto that. Most types of blackmail that could come from people having a scene here wouldn't even need as much as full scene logs, just the fact that person is even playing on the server at all can be more than enough depending on target.