Super Mario make a twist on the trope of the knight saving the princess. The knight is just a plumber and it is said to him that the ‘princess is an another castle’. But at the end the right order of the world is restaured when Mario finally frees the princess from the evil Bowser.

So from a political standpoint Super Mario is a product believing strongly in individualism and in the self made man ideology. The twist shows only that even a plumber can save the princess if he works enough = liberal capitalism making us believed that we’ll be all rock stars and billionaires when we’re definitively not (and yes I’m quoting fight club here). All this is the consequence of the game focussing more on gameplay than it’s narration, therefore it leans towards what was the common thinking of the time.

Polygamy (relationship between Peach, Mario and Luigi, if that’s what you are referring to) is much to me a side effect of the 2 players gameplay possibility, but it is still indeed pretty interesting in itself yeah.

You probably meant it as a joke, but too bad you get a real answer :)