1) You wouldn’t work for payment of an unspecified amount at an indeterminate future date. “Eventual tax” is not the same as “tax now”.

2) Likewise, paying a 2022 debt in 2027 dollars makes their effective tax rate even lower.

3) I don’t get to defer my income tax payments until a favourable year of my choosing, neither should the rich

4) that’s what the credit is for.