I do think you're missing the point of how negatives work though; they are simply an intermediate step.
The contrast rate of the negative is only relevant when paired with the contrast rate of the printing process.
When C41 films are paired with RA4 paper the resulting photos produce "normal" contrast photos.
The film an paper "balance" the contrast of the final result.
Sure it can be tweaked. They are all subjective. There are no photos that are printed without "adjustment" of at least exposure.
The question I have for you is why did you expect something different?