I too noticed the trope of Epics being attractive, and it definitely fits in with the comic book ideals. Other tropes lifted directly from comic books include….
Capes, trench coats, and other impractically cool outfits
Adoption of "code names" in lieu of their given names, even when given names (like Abigail Reed) are well known
Lack of concern for property damage (looking at you, Avengers)
Lack of concern for bystanders (thank you, Zack Snyder)
Impractical and implausible weapons such as swords and katanas
Powers that seem to fit the Epic's personality
In some cases, elevated speech patterns (though it should be noted that not all Epics fall into this; Steelheart's "I am divine!" monologue and Obliteration's habit of appropriating and misinterpreting quoting Revelations stand out, whereas Deathpoint, Fortuity, Firefight, Newton, and Prof all use a more natural diction)
All of these are staples of the comic book genre, for better or worse. And in-universe, they all seem to be a result of Calamity's corruption, which makes me wonder whether or not Calamity is trying to force them into a certain ideal. In other words, is Calamity using comic book tropes as inspiration for the corruption?