I think it's fairly obvious that John McAfee tried to make his suicide look like a murder which was made look like a suicide. The ultimate Batman Gambit, so to speak. I mean he was an "eccentric" 75-year-old Libertarian who was looking at the prospect of a 30-year prison sentence. He had nothing to lose anymore and maybe he decided to end his life and blame it on the U.S. government as his final "f**k you".
That’s kinda my thought too. His post saying he wouldn’t kill himself was over 8 months ago. A lot can change in someone’s mind in 8 months.