This happens all the time, its not just limited to Jump. Generally most series with rough styles like Kimetsu get done completely differently in anime form. Mob Psycho is probably one of the more recent examples where the anime tried to remain faithful to the manga’s rough art, though you could argue they also changed it drastically at the same time. In cases where it’s changed, I don’t really think the artist is capable of matching the anime’s style, hence why their own is rough in the first place. But I have read in interviews on quite a few occasions where mangaka have stated they liked how the anime handled certain things, and altered their drawing style to more match that. They generally weren’t authors with rough styles to begin with though.