I'll still vote for Trump. But he BLEW IT, and I don't think it matters at this point. He needed to lock down everything when he had the chance. He had victory in his hands and he let it slip away. His buffoonish attitude, lack of knowledge outside his narrow (but deep) field, his stubbornness and inability to pick competent, non-backstabber family grifter losers to help him...and WE are the ones who will suffer most of all.
The JFK files were one of 1000 little things that could have been done to secure himself a second term and vanquish as many of his enemies as possible. He most likely will not get a second chance.
You are second-guessing Trump on actions he took, when you have no intimate, or personal knowledge of the reason he made them. It's been sixty years since JFK was murdered by the CIA. I was a teenager when he was murdered. I don't need to have the documents released to know that. If you're expecting someone to go to prison if the truth is finally aired, forget it, because the people involved are either already dead, or are so old, they'll never be charged. At this point, it's a waste of energy to be upset with one person over something so stupid as releasing documents that won't tell anything new anyway.