It doesn’t work.
It was a cute idea in 1980 when Ronald Reagan presented it to a nation coming out of the 1970s malaise of inflation that Nixon left to Ford who handed it off to Carter. But they didn’t talk about the effects of that inflation longterm.
The money that trickles down loses its purchasing power because of inflation and other taxes and issues. If we put a $100 bill in an envelope in 1980 and allowed inflation to act on it, today when we went to get our cash we would only find $33.60. That is a 66% loss in purchasing power. We just cannot purchase the same amount of goods and services today that we could in 1980. Just fill up a grocery bag and see how fast it adds up.
So if you feed the horse enough oats eventually he shits on the sparrow.