Had the Californian had an all night telegraph operator, the Titanic's passengers would have been saved. The two telegraph men stayed until their room began to flood, I believe only one survived.
The Kennedy plane crash is completely different for a number of reasons - if it had been safe to recover the bodies after it happened with Titanic I'd not argue that they shouldn't be brought up. Much like Pearl Harbor and other tragedies (9-11, etc). There are no bodies or parts of bodies to recover at this point and it's 100 years old. The families have all said leave them be. We know as much as we will ever know at what happened with the ship's sinking. The only reason people want to bring it up now is to make money off of it. That should not be their right/call.
Senior Wireless Operator Jack Phillips died just before they reached Carpathia. He is a true hero and stayed in the Marconi room sending out messages to any ships he could. He had celebrated his biirthday on the 11th. Harold Bride survived and had to testify at the hearings. When he passed away his wife had no idea he had been on board Titanic.