I was going to rebut the linked article, but it has so many basic factual errors that it's easier to say that the article is completely useless. Suffice to say, when you cherry pick the financial considerations included in your "model", it's easy to reach whatever conclusion you want.
As the author of said article, I'd be keen to hear about these "factual errors". Yes, the calculation makes a lot of assumptions, many of them generous, but these are clearly laid out upfront. And while I agree that you would probably not want to use the exact model laid out ($2k salary plus company profit as dividends) in each country covered, you've got to establish some sort of baseline to be able to sensibly compare them!
I have considered doing a v2 where the starting point would be "$100k sitting in a company account" and the goal would "as much cash as possible in my personal account", but I'm not sure this would be particularly useful or any more realistic. For example, in Singapore the optimal strategy would be to draw zero salary and take out everything as tax-free dividends, but most entrepreneurs can't afford to wait a year to get any money at all.
For starters, at least half of your US tax rates are either wrong or wrongly applied. Beyond that, you'd have to pay me to spend the time to detail all of the inaccuracies. My hourly rate starts at $300.
How about one example before I hire you? The US tax rate computation is based on the MIT Living Wage calculator for personal taxes, and ZenPayroll for payroll taxes.
