Define rationality
I see a lot of red voters saying that only rational people should be included. So let's do that. But first, we need to decide on what criteria we're going to put in place. This affects who is voting and so also affects what decisions people make based on what they believe the other voters will pick.
I would argue that there isn't really a definition that can be applied universally which includes all rational actors and excludes all irrational actors. It becomes especially impossible if you want it to be a definition that most, if not all, agree on.
So what's your definition of what makes someone a rational actor? Age? Reading level? Languages understood? Religious beliefs? Mental health? Physical health? Philosophical beliefs? Formal philosophical education? Political affiliation? Criminal history? Addiction? Mental health history? Sexuality? Ethnicity? Job history?
Shoot. Whatever you think makes a person a valid participant in the button event.