Rwingers still choose to believe the Myth of Trickle Down Economics... you know, because Reagan. Even though Reagan's economic team, and the inventors of Supply Side Economics, later said it never, ever werked.

1Nutjob... still the Perfect Revers Barometer:

"Key Takeaways
Supply-side economics asserts that tax cuts and deregulation spur growth by enriching businesses.

Critics argue supply-side policies disproportionately benefit the wealthy and exacerbate inequality.

Historical data shows tax cuts don't consistently lead to job creation or investment boosts.

Evidence suggests supply-side economics doesn't guarantee stronger economic growth or higher tax revenue.

The theory lacks evidence that tax cuts pay for themselves through increased revenue."

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Also see:

"The magical thinking sold to the American people was that giving tax cuts to the rich would improve the lives of the majority. Laffer's theory provided a foundation for supply-side economics and was illustrated by the Laffer Curve, which he famously drew on a paper napkin for then-White House Chief of Staff Dick Cheney in the 1970s.

If the notion that cutting taxes increases revenue seems counterintuitive, there's a good reason: It's not supported by research. When that idea becomes the basis for government policy, it can have disastrous consequences."