This is because Superman and Wonder Woman, no matter the iteration, has some kind of history. This is what this collectibles book was basically saying as well. It’s contradictory, counterproductive, hypocritical, and insulting though. Screwing over their relationship be it romantic or platonic, was just a bad call all around especially when they continue to promote them either with merchandise as a couple or encyclopedias making it seem like they besties with complicated feelings.
All that pettiness aged like milk. Right back pretty much the same spot if not worse of why they had to reboot in the first place as well as being directionless and none of the characters have relationships/dynamics to care for.