re: Madbomber
With progressive taxation, the higher income earner contributes more to the national tax, like you said. I know it's only Wikipedia, but the linky for Belgium goes to PriceWaterhouseCoopers.
en.wikipedia.org
Belgium, Canada, Denmark, Germany, Norway, Sweden, UK, etc. all employ this progressive taxation system, and their combined GDP, according to the almighty Bing Copilot AI (that's a joke, but I'm too lazy to consult the most authoritative source for global financial information and add up each of their GDPs) is $11.7 trillion, or roughly 1/3 of what America puts out.
These countries all scored higher than America on the World Happiness Survey data.worldhappiness.report (I know, it's humanities, which aren't a profitable area of study, but there's $#!+ in this world more valuable than profit)
I was going to ask if he assaulted yet another person before even glancing at the abstract. Bingo!!