User blog comment:JMOfficial/Flash Big Bads in the Future/@comment-26618197-20170817204320/@comment-24152851-20170820051618

But if he doesn't get restored, he can't become the time remnant that goes back for all that stuff and the timeline will change again. Also, this is Reverse-Flash we're talking about. Who's to say he can't wiggle his way out of non existence again?