He could have killed himself anyway--- that is obvious, but his past statements still need to be taken seriously, and extra care and doubt need to be applied to the reported story.
Why? The fact that he had a paranoid fantasy of being murdered by the US government doesn't make it so. I don't have to take extra care with the ramblings of conspiracy theorists with a long history of outright bullshit.
Like the one where he promised to eat his own penis?
He was a clearly unhinged individual.
If McAfee said the moon is made of cheese, I’d call that less credible than McAfee saying he’s going to get suicided.