[hotcoffeebear]

If you think film as an art; it’s being colour or monochrome is become just a medium of choice and not improvement.

IMHO It’s even better now since RAW image information gives freedom to translate it in a monochromatic in a way director likes. Each monochromatic films has it’s rendition and contrast different, and you must use filters while filming if you want some different rendition than that (photographic) film intended.

Aside from that, I don’t know many examples films shot in colour film and reverted to monochromatic (schindler list maybe?). Instead saw more film shot in digital but converted into monochromatic (Eva, great polish film comes into my mind). Color grading has its effects so monochromatic conversion as well imho.