In 1960, the top marginal tax rate was 91%, applying to income over $200,000 for single filers — equivalent to roughly $1.5 million in today’s dollars. By 2017, the Tax Cuts and Jobs Act slashed the top rate to 37%,
These income brackets don't apply to billionaires. Whole article is built on completely false assumption. Billionaires pay primarily capital gains tax, which never was that high
From 1954 to 1967, the maximum capital gains tax rate was 25%.[12] Capital gains tax rates were significantly increased in the 1969 and 1976 Tax Reform Acts.[11] In 1978, Congress eliminated the minimum tax on excluded gains and increased the exclusion to 60%, reducing the maximum rate to 28%.[11] The 1981 tax rate reductions further reduced capital gains rates to a maximum of 20%.
https://en.wikipedia.org/wiki/Capital_gains_tax_in_the_United_States
Whole article is garbage
