I think if the story of your life gets exploded all over the news like theirs did, a certain amount of exploitation should be expected. You cant really stop it.
Unfortunately it can't be stopped.
I think there may be more tactful ways to do it, but ultimately, if you're telling the story about a famous criminal , gangster, serial killer, etc, inevitably, the victims families will feel harmed, and their loved ones will feel their relatives have been exploited.
In the case of
Once Upon A Time In Hollywood, the Sharon Tate's sister gave their blessings to Tarantino, but alot of times that doesn't happen.
In alot of cases, the Producers are adapting books based on a true crime story, so alot of their dialog and interaction is with the author of the book , as opposed to the victims or subjects family members.
Maybe in the future their will be more of a dialog between Producers and victims families, but ultimately, many studios will move forward with these projects regardless of the feelings of the living relatives and friends , much like many authors, podcast creators, etc, will move forward to tell the story without the families consent or input.