Depends on how you count it. according to ther Tax Policy Center, a non partisan research group who figure the aggregate tax burden this way; "The Tax Policy Center, a nonpartisan research group, uses a different approach and makes estimates. It divides taxpayers into five income groups, or quintiles, and calculates all federal taxes, including personal income taxes, payroll taxes and the worker and shareholder shares of corporate taxes", the top two income quintiles ($97 k or above per year) pay "95% of all federal taxes". https://www.statesman.com/story/news/politics/2021/09/16/examining-claims-against-aoc-tax-the-rich-dress-met-gala/8350769002/.

Now, in my book a $97 k income is far from rich, but if you adjust up a little, the top 5% ($185k and above) pay over half of all federal taxes, not just income tax. https://www.bing.com/search?q=top+5%25+of+us+income+earners&cvid=034b648bc1664ac49fbef2448da4bd52&aqs=edge.2.69i57j0l8.11463j0j1&pglt=43&FORM=ANN

I agree the tax code needs to capture more from the wealthy by closing capital gains loopholes and many others, I would agree that their effective tax rate needs to at least be equal to working people, but in any case the government needs to charge taxes;)