I see this become apparent on social media every so often and it's really just depressing how widespread the misunderstanding is.
51% of Americans who were polled in a 2021 survey agreed with the statement that "You pay your marginal tax rate on all of your income".
I didn't say best, I said simplest. Another way would be to make your take-home pay a weighted logarithmic decay curve. That would also be continuous and smooth, but it would involve high-school math that most Americans are utterly incapable of.