which kinda makes J'onn firmware patching all the major character's memories back in kinda morally questionable since they're all technically doppelgangers of originals (who are all dead) with slightly different lives.
It seems that J'onn is somehow actually repacing their memories with the pre-crisis version, which makes no sense on several levels. Most egregious of which is where is all the memory information coming from? Really should have had them keep their new memories and just gotten them up to speed on what happened with crisis. Plus they still need the memories of the new reality, for a very minor example, what if Alex's DEO password is different this time around?