(But actually that guy in the middle doesn't just have this plate full of cookies. He owns a huge vessel full of cookies)

But rich white men stealing their crumbs is fine because they aren't brown

Better than Jose over there, a hard working fine gentleman, getting his needs met

It is true for the general disposition. Do you vote in your own interests vs do you vote in the general best interest. Your motivations may be malicious or incompetent, a two party system doesn't discern.

I don't believe this. People may have multiple agendas. They may hate foreigners or cultures, but people's allegiances are always first and foremost to their own, to keep living in the most comfortable way they can with the lowest possible eftort. It's kind of game theoretical in some sense.

Game theory occupies itself with the adversary roles of generosity (a moral principle) and calculation (a purely rational one), and in some way you could say that in a system which only allows one of two outcomes, a lot of assumptions are subsumed under those two separate outcomes.

What if Candidate A is for lower taxes, higher immigration and Candidate B is for higher taxes and lower immigration?

What if both candidates agree on lower taxes and lower immigration, but one of them also proposes reinstating slavery, and the other one wants none of it but instead mandatory abortions?

In a two party state you don't get enough fine grained resolution to deal with problems that require any complexity beyond perfectly white and perfectly black.