You know how in One punch man and the eminence in shadows, every time a new super powerful villain appears they always make sure to explain why this one is even more powerful than the last one, showing them toying with the heroes, building up the threat. So that you start thinking "d@m this one might actually pose a challenge" and then Saitama/Cid appears and one-shots them. That's the exact same thing here, just replace "fight" with "s3x"