I thought they had interacted, maybe during the crossover that originally involved the reality changing book? But if I'm wrong about that, then that's on me. I'm still not a fan of cryer, but you're probably right that he feels like a "Supergirl" character at this point, he fits better with her then with Superman.
The fact that they are going to be a big, if not the biggest, part of the show was already said. They should be under 1 year old, and there should only be one of them. instead, its CW thinking that every fucking show needs to either be about teens/pre-teens or have characters for them, instead of focusing on the title character. Superman hasn't had a real live action TV show since the 50s (the shitty 90s romcom doesn't count, since Superman was barely a cameo in it, and Smallville was very much about Clark instead of Superman), at most there should be one kid that pretty much only exists to be put in danger or be an annoying distraction from the plot (basically taking the old Lois role from before she was allowed to be more then a damsel in distress).
I don't want to watch a show about Superman's shitty kids, but thats what they've made, because the CW is generally terrible and the people running the CW DC shows are incompetent hacks. I mean, Supergirl is the second worst CW DC show after Legends (although Fake Batwoman might take second place from Supergirl next season), so it makes sense that Superman would also be fucking terrible and miss the point of having a superman show (the point being we get to see Superman as the focus character doing superman/Clark Kent things).
So. Much. Yawn.