Because they're dead, obviously. {And I never said that Johnson, Goode, or Hoefling were lesser.}
Sure, they’re dead, but that means they have the exact same chance to become President on Jan 20 that Johnson, Goode and Hoelfling do. No chance.
So, if the goal is to avoid “playing a game” by withholding your vote from the Mittster and giving it to a better candidate who can’t possibly become President, then why not the best President ever, John Adams?
Write him or Coolidge in. If you don’t, you’re just stroking your own ego.