Hence why bringing up a case where justice was not served proportionally presents an opportunity to discuss where potential improvements could be made or errors were committed.

I know it makes people who take comfort in institutions and rules uncomfortable to bring up the fact that none of this is real and all of it is a construct.

But we can in fact improve "the law" and have done so basically since the beginning of time, hence how the current law came to be. In the US specifically, this is literally the basis of how common law works (bottoms up vs. top down).