No one is arguing that the Rich pay a higher % of the total tax collected, they have more money, even with a flat tax or reverse tax rolls where the rich pay a lower individual % this would occur.
The issue is IMPACT on an Individual's finances.
If the % of the total tax collected that comes from the Rich increases, you have to look for two causes: Did their tax rates go up OR did their Tax Bills remain stable while the overall amount of tax collected decreased?
You and Expertise are descending into a new level of hackery as you try to argue basic math and ignore the fact that people are arguing tax burden as a function of individual impact, rather than where tax dollars come from on aggregate.