User blog comment:JMOfficial/Flash Big Bads in the Future/@comment-26618197-20170817204320/@comment-24152851-20170819142007

I don't know about that theory. Eddie can't have killed himself in the original-original timeline, or Eobard can't have existed in the first place to become a time remnant. While speedsters can cheat being erased from existence under certain circumstances, they can't come out of nowhere.