User blog comment:Eobard95/Flash 5x08 - Thawne and Zoom plotholes/@comment-27700324-20181210062328

1. Zoom probably sent a remnant to get his V-9 Syringe so the one we saw in the 100th episode was probably not even the real Zoom. Therefore if the Time Wraiths got to him, the timeline doesn't change.

2. Eobard knows because Flashpoint still affects where he is. It isn't like you can go to a time before Flashpoint. It is a constant in history now. So Savitar going across the multiverse and spreading his legend is still a thing at Season one and therefore Eobard knows and possibly unmasked him.