Yeah, I borrowed the movie from a friend and was astounded by the brutality therein, too. I'm just an old man, I guess.
I DID like Aquaman's power showings, even if I didn't care for his portrayal. As for Reverse-Flash, I'm under the impression he doesn't have super-speed, but can step in and out of time somehow, and THAT may be how he avoided being changed.
Thanks for the review, too!
The Thawn Reverse Flash doesn't have the time stepping powers... but is connected to the Speed Force. I figure that is why he remembered the old timeline, just like Barry did.
The Hunter Zolomon Zoom character has time stepping powers.