Tbf Saitama does like ignore the “reality” of his universe all the time.
He is like a genuine pseudo gag character at times where he’ll just BS things like for example:
- Previously stating he needed oxygen until he didn’t when he fought Garou.
- Entering a separate dimension with Child Emperor by “knocking”
- Grabbing Garou’s hyperspace gates
- Him somehow being able to learn time travel???
He is like a bullshit character to a degree. It’s just that he’s not a complete gag and is an actual character with emotions, goals, or feelings as well as lore behind his type of absurd strength.