I'm not saying you're point isn't valid, but your reference to the wealthiest 100 Americans is relatively meaningless to any discussion being had here.
Also, the federal budget is composed of so many things[2], saying that taxing high wealth individuals couldn't affect it is a bit disingenuous. The bottom line is that if you have more money in the pool (either by raising revenue or cutting expenses), you can pay for more new projects. Taxing these people could add millions of dollars to that pool. I'm not trying to say that's good or bad. It's a zero sum game here, either the individuals spend it on the projects of their choice, or the government gets it and spends it the way they want.
1-https://dqydj.com/how-many-millionaires-decamillionaires-ame... 2-https://www.nationalpriorities.org/budget-basics/federal-bud...