Maybe Superman being OP would be boring if we had ever gotten it on screen a single time ever. We've never had a Superman movie where he kicks anyone's ass. besides the Snyder and Whedon JLA
Superman II, him and the Zod Squad throw shit at each other basically and then they get depowered, he beats up 1 regular guy in a diner in the end I guess but that is decidedly not what I'm talking about, Superman 3 him and his inner alcoholic throw down in a junkyard for a second, 4 he beats Nuclear Man i guess but its not like he whoops his ass, Returns he just gets stabbed with kryptonite, his ass kicked, and thrown off a cliff. Man of Steel he wins but he is just scrambling around fighting for his life not in control at all, BvS Batman hits him with some kryptonite and fucks him up, the new one he gets beat up by everyone and everything thrown at him and his dog saves the day.
He does the Superman thing where he shows up, takes no shit, and competently bodies the villian 1 single time ever, and it's Steppenwolf in JL. Maybe that shit would be boring if we had tons of it, but we had 1 movie in 50 years where he does it.
1938 or 2038 it doesnt matter, it isnt boring to have your hero be good at what he does, you just have to have other interesting shit going on. I of course dont think he should never struggle or something, even in a fight, I just think they overthink the OP thing and it would be nice to have a Superman who even seems like he knows how to fight.
I read when the last one came out that someone interviewed Grant Morrison about it and were trying to get him to gas the movie up and he liked it but for criticism said something like "Superman is a scrapper, I wanted to see him beat the bad guys up but he gets beaten up the whole movie"