Let me summarize the items you misinterpreted

 

1. Double-counting components within GDP (resident income and government spending should not be directly added)

 

2. Mistakenly assuming government “spending” = taxes + borrowing, without excluding internal transfers

 

3. Incorrect use of a “50% tax rate”, the actual U.S. tax burden is much lower

 

4. Ignoring other income sources (e.g., capital income) when estimating per capita income