

The aspect of game theory people who espouse it as their rational for voting blue no matter who only applies to games that occur only once.
What strategy wins in the long term over multiple plays is exactly opposite what they espouse and is closer, though not entirely, the strategy espoused by the people they argue against.
We have elections on a repeated basis.
Sorry, I will move the goal posts a little. There was no fair primary.
Read the Ballot Access Denial subsection of the controversies section on your link.