How can this such manga got approved ?
It's like a story written by someone in his high school
1) Some mangakas are really high-schoolers.
2) Read japanese reviews and comments and you will understand.
About the 2nd point, i found a really annoying and stupid Isekai, many of us blasted it with diarrhea (6 out 10). Many comments on mangadex and other web pages said it's bad.
Looked up japanese comment section.....3 out 5 but they were blasting it not for the reason that MC was a doormat, loser and etc. Simply because it was not original and many could not "feel themselves as MC(empathize)" and not due to him being a complete doormat and a loser but because he has chosen stupid abilities and contradicts about wanting a slow life.
Basically speaking they are different. Their loser tolerance is much higher since loser mentality is more acceptable in their country since amount of people with that mentality is higher. In western world (many Asian countries too) even loser will sometimes flirt with a girl (and i mean objective loser who literally doesn't have anything behind him) in japanese case even a guy who got his shit together (not saying success simply an ok guy) might be worse than a turtle (hiding in his shell constantly).