I have recently replayed Assassins creed Revelations on my pc,. I'm curious regarding the sad undoing of Subject 16 what did Desmond do differently for this scripted event to happen or was it something on Subject 16's account that caused this server wipe.

I'm aware that the poor Hero had basically been trapped in the Animus for making the sacrifices he did for the salvation of Desmond when he was taken into Abstergo. Maybe it was from Ezio, when Ezio had the happy satisfaction of saving Sofia and feeling peace when the Uncle guy gets totalled and that Sofia and Him are free from the Templar's bullshit.

This feels very connected, as this server wipe happens after Ezio basically gets threatened by the Sultan to piss off or basically have a battle he had with the templars at game intro. Except his death would be easy earned and he'd maybe get 1 extra kill to his name before having a death a lot similar to how John Martson from Red Dead Redemption goes out.

Does this explain why the server wipe starts it notices that Ezios happiness and mind are being played around with very extensively and it notices that Clay is not the only virus?

So then it just decides to full purge itself or what exactly happens during Chapter 9-10 that permits this deletion?

If so then why the Moments where we are pulled out for a bit because Subject 16 wanted to chat during specific chapter ends didn't permit the Animus to notice these activities of memory altering and playing with things and to start a deletion?