This seems to be fairly arbitrarily double-counting all sorts of things. Taxes are levied at pretty much any transaction, so of course if you bundle multiple transactions, you get higher supposed rates. You could take it as high as you want with this accounting approach. Say you invest your money in a company, which earns profit, and pays corporate income taxes, then it reinvests that money for 10 years in a row, earns a profit each year, on which it pays income tax each year, then pays it to you in dividends. Then you reinvest that money in another company, and repeat. Then after some time, you use that money to buy some equipment, paying sales tax on it, and use that equipment to earn money, paying taxes on that income, which you then use to buy cigarettes. Oh my, you've paid about 99% tax at this point! That's the nature of taxes levied on transactions: if you run money through arbitrarily many transactions, it gets taxed at a rate arbitrarily close to 100%.
Mostly though it just seems like a content-free anti-tax whine. Is this really HN material? Is HN now the libertarian anti-reddit, purveyor of embarrassingly superficial economic analysis with strong political content massaging the viewpoints of its audience?