That's true but...

the higher you get on the income scale, the less income is derived from the sources that are taxed at the top marginal rate. For the richest taxpayers, most of their income is derived from capital gains which is taxed much lower than wages and salaries. What's important is the Effective Tax Rate which takes into account all taxes.

Here's a link to a CBO report from 2007 you may find interesting. It breaks down how the various "quintiles" of income are taxed. It also breaks down the highest quintile to numerous subsets of data since the top quintile consists of anyone in the upper middle class up to Bill Gates.

https://www.cbo.gov/publication/20374

So, when you hear that raising the top marginal rate will raise taxes a lot on rich folks - it won't. When you hear that poor people don't pay taxes - they do. I wholeheartedly agree with your post and I think this information will clarify a few things.