I have to disagree with the good doctor. It is not really a theory, it is an observation.
Actual trickle down occurs when the government extracts revenues from citizens through taxes, fees, penalties, or whatever they choose to call it.
The revenue is then filtered down through a maze of bureaucracies. Whatever is not consumed by the government then trickles down to the benefit of the citizens.
Which is another way of saying that, for every dollar that actually gets used for its intended purpose, many many dollars are collected.
If people ate according to the “lots in, little out” diet, obesity would be even worse than Moochells claims. Not a good “optic” for the government, but accurate.