The Platform is a good example of how it actually works. Those at the top eat everything then throw their shit at whoever is below them.

OF COURSE trickle down works! I just don't understand what's going on in people's minds that they believe the rich people (i.e. all the water) were at the top of the image.

There are lots of reasons why money trickles down from the poor to the rich. Expecting money to trickle from the rich to the poor is like pouring water into an ocean and expecting the mountains to get wet.