Loans from the import export bank that are repaid do not take taxpayers money.
This is categorically not true. To issue these almost interest-free loans, government prints money. This devalues everyone else money. You can visualize it the following way - to lend 10 Bil at 0.5% government steals 1c from everyone, and we never get it back.
Even so, did you ever figure out if Boeing is operating in the red, or is making billions? It can't be both.
It can be both. Boeing is making billions because of government loans, grants, and government contracts. Take away that and they will be deeply in red.