The Dark we know was never present in the WKM video, just like it wasn’t Him in the DvA video. But they may both serve a purpose… His purpose.
Darkiplier vs. Antisepticeye resulted in us no longer seeing Dark as a threat.
Who Killed Markiplier? resulted in us seeing Dark as someone to sympathize with.
Perhaps this was Dark’s plan all along. There are no choices to be had, because He’s giving us none. He’s actively reshaping the way we see Him, manipulating our understanding of reality.
He first took away our fear of Him, and then He took away our reasons to mock and despise Him.
We’re all His now. We’re ready to let Him in.