Season 1 of demon slayer was so above and beyond the Manga. The manga is by no means bad but Ufotable is not only doing a very solid adaptation its also taking liberties in the best of manners on directing and additional small moments. We meme on the moment of season 1 that was basically a single page vs a whole elaborate scene in the Anime that ended up being the hypest moment in the season enough to make the author cry after seeing it adapted. And apparently the movie is also taking said liberties of additions to the Manga that people are receiving well.
Point being when an anime doesn't need to lower the quality of the art or the pacing/story beats aren't affected then it's likely to be better if in capable hands because you can do so much more with animation and audio/music than with drawings.
Point being when an anime doesn't need to lower the quality of the art or the pacing/story beats aren't affected then it's likely to be better if in capable hands because you can do so much more with animation and audio/music than with drawings.