You know the craziest part? The guy's a dead ringer a 20 something Clark Kent.
That's a pretty Clark Kent ass lookin dude if I've ever seen one. It's almost kinda freaky.
You can't really blame anyone, can you? Apokolips War ends with the very clear indication that there will be a reset, and then the very next film after that we're getting a Superman origin story that's featuring two direct mentions to two heroes from the DCU. That's exactly how they went from Flashpoint Paradox to Justice League War. There was no between film. Again, how can you blame anyone?
And to add to that, our Superman is wearing a classic suit with details (pointed ringed cuffs) that resemble his current suit in the comics similar to how the now old animated universe, in their own way, reflected what the current suit for the comics were.
But ultimately we don't know either way, and may continue to not even after the film comes out.