Lots of seemingly healthy people do die of strokes every day, yes.
And then there are the Secret Service folks.
They aren't you're average "Chuckey Cheeseburger Gut" types. Especially not at 42 years old.
Within a certain context, it doesn't seem particularly "crazy" to question that guy's death.
Granted, you may know something about this that the rest of us could benefit from knowing?
If so, give us a hint?
Asshat.