You don't have to block it all of the time, 90% of the time Darkseid gets AA'd before he even has a chance to enforce it.
He's dependent on trait in the neutral, just like Atrocitus, so he has to camp and charge minions in order to enforce 50/50's. The difference is that Darkseid's trait is a one-off and he doesn't get a period of sustained pressure and chip like Atrocitus does. His grounded 50/50's aren't fuzzyable the way Atro's mixups are, so that's a different advantage in playstyle. He also doesn't have the footsie tools that a character like Atro does, however, and his zoning is slow and simplistic, flowchart and easy to get around if you have any defensive skill. Darkseid's neutral is weaker than most characters because of these aspects of his character, and his damage is sick if you can get it, but it is based on difficult to reach 50/50 scenarios that are easily punishable should the defender guess correctly. That's why it's hard to play neutral with him successfully.
