Board Thread:The Flash discussions/@comment-26855145-20161026193400/@comment-3423279-20161027222715

I guess the fact that any action he ever took had the ability to screw up 100+ years of history relative to him isn't coming across.

Eobard encountering them at some point in his past just means that at some point he wasn't as skilled at "safely" changing the timeline as he is now (freaking time travel tenses)

He kinda has to be that infallible if he didn't mess up the timeline with his actions for over 14 years enough for the Speed Force to send the Time Wraiths after him after we've seen Barry and Hunter get the weird looking Time Cops get sicced on em after moving like half a year into the past (Barry) or just screwing with it constantly (Hunter)